Add Nethernet support (netty-transport-nethernet)

.github/readme/nethernet_client_dark.mmd

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+---
+config:
+  layout: elk
+  theme: redux-dark
+---
+flowchart LR
+ subgraph TransportLayer["<b>NetherNet Transport</b>"]
+    direction TB
+    Native["<b>WebRTC Native</b><br><i>libdatachannel</i>"]
+    DataChannel["<b>RTCDataChannel</b><br><i>Reliability & Ordering</i>"]
+    ClientChannel["<b>NetherNetClientChannel</b><br><i>Netty Adapter</i>"]
+ end
+ subgraph UserPipeline["<b>User ChannelPipeline</b>"]
+    UserLogic["<b>User Handlers</b><br><i>Application Logic</i>"]
+ end
+
+    Network(("Network (DTLS/UDP)"))
+    Network == Encrypted Frame ==> Native
+    Native == Reassembled Message ==> DataChannel
+    DataChannel == <i>RTCDataChannelBuffer</i> ==> ClientChannel
+    ClientChannel == <i>ByteBuf</i> ==> UserLogic
+    UserLogic == <i>ByteBuf</i> ==> ClientChannel
+    ClientChannel == <i>RTCDataChannelBuffer</i> ==> DataChannel
+    DataChannel == Message ==> Native
+    Native == Encrypted Frame ==> Network
+    Native:::shared
+    DataChannel:::shared
+    ClientChannel:::shared
+
+    classDef shared fill:#e67e22,stroke:#333,stroke-width:2px
+
+    linkStyle 0 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 1 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 2 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 3 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+
+    linkStyle 4 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 5 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 6 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 7 stroke:#3498db,stroke-width:4px,color:#3498db

.github/readme/nethernet_client_light.mmd

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+---
+config:
+  layout: elk
+  theme: redux
+---
+flowchart LR
+ subgraph TransportLayer["<b>NetherNet Transport</b>"]
+    direction TB
+    Native["<b>WebRTC Native</b><br><i>libdatachannel</i>"]
+    DataChannel["<b>RTCDataChannel</b><br><i>Reliability & Ordering</i>"]
+    ClientChannel["<b>NetherNetClientChannel</b><br><i>Netty Adapter</i>"]
+ end
+ subgraph UserPipeline["<b>User ChannelPipeline</b>"]
+    UserLogic["<b>User Handlers</b><br><i>Application Logic</i>"]
+ end
+
+    Network(("Network (DTLS/UDP)"))
+    Network == Encrypted Frame ==> Native
+    Native == Reassembled Message ==> DataChannel
+    DataChannel == <i>RTCDataChannelBuffer</i> ==> ClientChannel
+    ClientChannel == <i>ByteBuf</i> ==> UserLogic
+    UserLogic == <i>ByteBuf</i> ==> ClientChannel
+    ClientChannel == <i>RTCDataChannelBuffer</i> ==> DataChannel
+    DataChannel == Message ==> Native
+    Native == Encrypted Frame ==> Network
+    Native:::shared
+    DataChannel:::shared
+    ClientChannel:::shared
+
+    classDef shared fill:#e67e22,stroke:#333,stroke-width:2px
+
+    linkStyle 0 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 1 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 2 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 3 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+
+    linkStyle 4 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 5 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 6 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 7 stroke:#3498db,stroke-width:4px,color:#3498db

.github/readme/nethernet_server_dark.mmd

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+---
+config:
+  layout: elk
+  theme: redux-dark
+---
+flowchart LR
+ subgraph TransportLayer["<b>NetherNet Transport</b>"]
+    direction TB
+    Native["<b>WebRTC Native</b><br><i>libdatachannel</i>"]
+    DataChannel["<b>RTCDataChannel</b><br><i>Reliability & Ordering</i>"]
+    ChildChannel["<b>NetherNetChildChannel</b><br><i>Netty Adapter</i>"]
+ end
+ subgraph UserPipeline["<b>User ChannelPipeline</b>"]
+    UserLogic["<b>User Handlers</b><br><i>Application Logic</i>"]
+ end
+
+    Network(("Network (DTLS/UDP)"))
+
+    %% Inbound
+    Network == Encrypted Frame ==> Native
+    Native == Reassembled Message ==> DataChannel
+    DataChannel == <i>RTCDataChannelBuffer</i> ==> ChildChannel
+    ChildChannel == <i>ByteBuf</i> ==> UserLogic
+
+    %% Outbound
+    UserLogic == <i>ByteBuf</i> ==> ChildChannel
+    ChildChannel == <i>RTCDataChannelBuffer</i> ==> DataChannel
+    DataChannel == Message ==> Native
+    Native == Encrypted Frame ==> Network
+
+    %% Styling
+    Native:::shared
+    DataChannel:::shared
+    ChildChannel:::shared
+
+    classDef shared fill:#e67e22,stroke:#333,stroke-width:2px
+
+    linkStyle 0 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 1 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 2 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 3 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+
+    linkStyle 4 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 5 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 6 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 7 stroke:#3498db,stroke-width:4px,color:#3498db

.github/readme/nethernet_server_light.mmd

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+---
+config:
+  layout: elk
+  theme: redux
+---
+flowchart LR
+ subgraph TransportLayer["<b>NetherNet Transport</b>"]
+    direction TB
+    Native["<b>WebRTC Native</b><br><i>libdatachannel</i>"]
+    DataChannel["<b>RTCDataChannel</b><br><i>Reliability & Ordering</i>"]
+    ChildChannel["<b>NetherNetChildChannel</b><br><i>Netty Adapter</i>"]
+ end
+ subgraph UserPipeline["<b>User ChannelPipeline</b>"]
+    UserLogic["<b>User Handlers</b><br><i>Application Logic</i>"]
+ end
+
+    Network(("Network (DTLS/UDP)"))
+    Network == Encrypted Frame ==> Native
+    Native == Reassembled Message ==> DataChannel
+    DataChannel == <i>RTCDataChannelBuffer</i> ==> ChildChannel
+    ChildChannel == <i>ByteBuf</i> ==> UserLogic
+    UserLogic == <i>ByteBuf</i> ==> ChildChannel
+    ChildChannel == <i>RTCDataChannelBuffer</i> ==> DataChannel
+    DataChannel == Message ==> Native
+    Native == Encrypted Frame ==> Network
+    Native:::shared
+    DataChannel:::shared
+    ChildChannel:::shared
+
+    classDef shared fill:#e67e22,stroke:#333,stroke-width:2px
+
+    linkStyle 0 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 1 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 2 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+    linkStyle 3 stroke:#2ecc71,stroke-width:4px,color:#2ecc71
+
+    linkStyle 4 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 5 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 6 stroke:#3498db,stroke-width:4px,color:#3498db
+    linkStyle 7 stroke:#3498db,stroke-width:4px,color:#3498db

.github/readme/raknet_client_dark.mmd

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+---
+config:
+  layout: elk
+  theme: redux-dark
+---
+flowchart LR
+ subgraph InternalPipeline["<b>RakNet Internal Pipeline</b><br>(Parent DatagramChannel)"]
+    direction TB
+        ProxyRoute["<b>RakClientProxyRouteHandler</b><br><i>Routes to/from Client Channel</i>"]
+        DatagramCodec["<b>RakDatagramCodec</b><br><i>Encodes/Decodes<br>RakNet Datagrams</i>"]
+        AckHandler["<b>RakAcknowledgeHandler</b><br><i>Manages ACKs/NACKs</i>"]
+        SessionCodec["<b>RakSessionCodec</b><br><i>Reliability, Ordering,<br>Split Packets</i>"]
+  end
+ subgraph UserPipeline["<b>User ChannelPipeline</b><br>(RakClientChannel)"]
+        UserLogic["<b>User Handlers</b><br><i>Application Logic</i>"]
+  end
+    Network(("Network Socket")) == Inbound <i>UDP Datagram</i> ==> DatagramCodec
+    DatagramCodec == <i>EncapsulatedPacket</i> ==> AckHandler
+    AckHandler == <i>EncapsulatedPacket</i> ==> SessionCodec & DatagramCodec
+    SessionCodec == <i>ByteBuf</i> ==> ProxyRoute
+    ProxyRoute == <i>ByteBuf</i> ==> UserLogic & SessionCodec
+    UserLogic == <i>ByteBuf</i> ==> ProxyRoute
+    SessionCodec == <i>EncapsulatedPacket</i> ==> AckHandler
+    DatagramCodec == Outbound <i>UDP Datagram</i> ==> Network
+
+     ProxyRoute:::shared
+     DatagramCodec:::shared
+     AckHandler:::shared
+     SessionCodec:::shared
+    classDef shared fill:#9b59b6,stroke:#333,stroke-width:2px
+    linkStyle 0 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 1 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 2 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 3 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 4 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 5 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 6 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 7 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 8 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 9 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none

.github/readme/raknet_client_light.mmd

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+---
+config:
+  layout: elk
+  theme: redux
+---
+flowchart LR
+ subgraph InternalPipeline["<b>RakNet Internal Pipeline</b><br>(Parent DatagramChannel)"]
+    direction TB
+        ProxyRoute["<b>RakClientProxyRouteHandler</b><br><i>Routes to/from Client Channel</i>"]
+        DatagramCodec["<b>RakDatagramCodec</b><br><i>Encodes/Decodes<br>RakNet Datagrams</i>"]
+        AckHandler["<b>RakAcknowledgeHandler</b><br><i>Manages ACKs/NACKs</i>"]
+        SessionCodec["<b>RakSessionCodec</b><br><i>Reliability, Ordering,<br>Split Packets</i>"]
+  end
+ subgraph UserPipeline["<b>User ChannelPipeline</b><br>(RakClientChannel)"]
+        UserLogic["<b>User Handlers</b><br><i>Application Logic</i>"]
+  end
+    Network(("Network Socket")) == Inbound <i>UDP Datagram</i> ==> DatagramCodec
+    DatagramCodec == <i>EncapsulatedPacket</i> ==> AckHandler
+    AckHandler == <i>EncapsulatedPacket</i> ==> SessionCodec & DatagramCodec
+    SessionCodec == <i>ByteBuf</i> ==> ProxyRoute
+    ProxyRoute == <i>ByteBuf</i> ==> UserLogic & SessionCodec
+    UserLogic == <i>ByteBuf</i> ==> ProxyRoute
+    SessionCodec == <i>EncapsulatedPacket</i> ==> AckHandler
+    DatagramCodec == Outbound <i>UDP Datagram</i> ==> Network
+
+     ProxyRoute:::shared
+     DatagramCodec:::shared
+     AckHandler:::shared
+     SessionCodec:::shared
+    classDef shared fill:#9b59b6,stroke:#333,stroke-width:2px
+    linkStyle 0 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 1 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 2 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 3 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 4 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 5 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 6 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 7 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 8 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
+    linkStyle 9 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none

.github/readme/raknet_server_dark.mmd

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+---
+config:
+  layout: elk
+  theme: redux-dark
+---
+flowchart RL
+ subgraph InternalPipeline["<b>RakNet Internal Pipeline</b><br>(RakChildChannel)"]
+    direction TB
+        ChildDatagramHandler["<b>RakChildDatagramHandler</b><br><i>Bridge to Parent Channel</i>"]
+        DatagramCodec["<b>RakDatagramCodec</b><br><i>Encodes/Decodes<br>RakNet Datagrams</i>"]
+        AckHandler["<b>RakAcknowledgeHandler</b><br><i>Manages ACKs/NACKs</i>"]
+        SessionCodec["<b>RakSessionCodec</b><br><i>Reliability, Ordering,<br>Split Packets</i>"]
+  end
+ subgraph UserPipeline["<b>User ChannelPipeline</b>"]
+        UserLogic["<b>User Handlers</b><br><i>Application Logic<br>(e.g. Bedrock Protocol)</i>"]
+  end
+    Network(("Network Socket")) == Inbound <i>UDP Datagram</i> ==> Parent["<b>RakServerChannel</b><br><i>UDP Bind &amp; Routing</i>"]
+    Parent == Routed <i>DatagramPacket</i> ==> ChildDatagramHandler
+    ChildDatagramHandler == <i>DatagramPacket</i> ==> DatagramCodec & Parent
+    DatagramCodec == <i>EncapsulatedPacket</i> ==> AckHandler
+    AckHandler == <i>EncapsulatedPacket</i> ==> SessionCodec & DatagramCodec
+    SessionCodec == <i>ByteBuf</i> ==> UserLogic
+    UserLogic == <i>ByteBuf</i> ==> SessionCodec
+    SessionCodec == <i>EncapsulatedPacket</i> ==> AckHandler
+    DatagramCodec == <i>DatagramPacket</i> ==> ChildDatagramHandler
+    Parent == Outbound <i>UDP Datagram</i> ==> Network
+
+     ChildDatagramHandler:::shared
+     DatagramCodec:::shared
+     AckHandler:::shared
+     SessionCodec:::shared
+    classDef shared fill:#9b59b6,stroke:#333,stroke-width:2px
+    classDef incoming fill:#2ecc71,stroke:#333,stroke-width:2px
+    classDef outgoing fill:#3498db,stroke:#333,stroke-width:2px
+    linkStyle 0 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 1 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 2 stroke:#2ecc71,stroke-width:4px,color:#2ecc71,fill:none
+    linkStyle 3 stroke:#3498db,stroke-width:4px,color:#3498db,fill:none
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