Add DeckMTP plugin

[dafta]

DeckMTP

This plugin adds MTP functionality to the Deck, allowing file transfer to other PC's, phones, and Steam Decks via USB.
However, in order for the plugin to work, DRD needs to be enabled in BIOS to allow gadget mode.

Checklist:

Developer Checklist

• I am the original author or an authorized maintainer of this plugin.
• I have abided by the licenses of the libraries I am utilizing, including attaching license notices where appropriate.

Plugin Checklist

• I have verified that my plugin works properly on the Stable and Beta update channels of SteamOS.
• I have verified my plugin is unique or alternatively provides more/alternative functionality to a similar plugin already on the store.

Plugin Backend Checklist

• Yes: I am using a custom backend other than Python.
• Yes: I am using a tool or software from a 3rd party FOSS project that does not have it's dependencies statically linked.
• No: I am using a custom binary that has all of it's dependencies statically linked.

Testing

• Tested on SteamOS Stable Update Channel.
• Tested on SteamOS Beta Update Channel.

• Tested on SteamOS Preview Update Channel.

[TrainDoctor]

Please include either the license of your choosing or replace "Hypothetical Decky Plugin Developer" with your own name/preferred alias. Thanks.

[TrainDoctor]

@dafta please make necessary adjustments to your makefile so CI may complete.

[EMERALD0874]

Closing this PR since the creator is non-responsive. Please reopen this PR once you have made the requested changes.

[dafta]

Sorry, I was away for a while due to moving issues, internet, and having to go through the process of RMAing my Steam Deck, so I didn't notice the original build error. I have fixed it now.

[nabel0]

Just installed the new build. Changed USB settings in bios to "DRD" and rebooted.
But you plugin still wont let me "Enable MTP" and says "DRD is disabled..........."
But it IS enabled fro sure..I double checked in the bios.

[dafta]

I checked again with the plugin built by the CI, and it works on my end. I'm using the 1.0.0-eb5ea9c version of the build.

Maybe try disabling DRD, rebooting, and enabling it again. If it was on by default on your Deck, that's because of a BIOS update which seemingly enabled it but left it disabled and you had to reenable it yourself.

[nabel0]

I checked again with the plugin built by the CI, and it works on my end. I'm using the 1.0.0-eb5ea9c version of the build.

Maybe try disabling DRD, rebooting, and enabling it again. If it was on by default on your Deck, that's because of a BIOS update which seemingly enabled it but left it disabled and you had to reenable it yourself.

doesent work
i'll disabled it..rebooted
and then i reenebled DRD again
Plugin still says it's not enabled in bios
im on bios F7A0110

[nabel0]

Works fine now.
Tested under steamos stable, beta and preview

[TrainDoctor]

Good for production.