Activate anchor outputs

[t-bast]

This feature is now ready to be widely deployed. The transaction format has been tested for a long time (between Phoenix iOS and our node) and automatic fee-bumping has been implemented in #2113.

[codecov-commenter]

Codecov Report

Merging #2134 (07da8ab) into master (40f7ff4) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2134      +/-   ##
==========================================
+ Coverage   87.43%   87.48%   +0.05%     
==========================================
  Files         170      170              
  Lines       13191    13197       +6     
  Branches      563      553      -10     
==========================================
+ Hits        11534    11546      +12     
+ Misses       1657     1651       -6     

Impacted Files	Coverage Δ
...main/scala/fr/acinq/eclair/router/Validation.scala	90.76% <0.00%> (-1.54%)	⬇️
...main/scala/fr/acinq/eclair/io/PeerConnection.scala	85.44% <0.00%> (-0.39%)	⬇️
...re/src/main/scala/fr/acinq/eclair/CltvExpiry.scala	100.00% <0.00%> (ø)
...rc/main/scala/fr/acinq/eclair/ShortChannelId.scala	100.00% <0.00%> (ø)
...in/scala/fr/acinq/eclair/channel/ChannelData.scala	100.00% <0.00%> (ø)
...q/eclair/blockchain/watchdogs/HeadersOverDns.scala	16.66% <0.00%> (ø)
...ire/internal/channel/version3/ChannelCodecs3.scala	100.00% <0.00%> (ø)
.../acinq/eclair/blockchain/bitcoind/ZmqWatcher.scala	88.13% <0.00%> (+2.54%)	⬆️
...q/eclair/channel/publish/ReplaceableTxFunder.scala	91.09% <0.00%> (+4.18%)	⬆️
...e/src/main/scala/fr/acinq/eclair/BlockHeight.scala	69.23% <0.00%> (+9.23%)	⬆️