Update MetaDeck to 3.0.0

[KP2048]

MetaDeck

Updated to decky v3, and fixed a lot of the long standing issues with the plugin.

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

• No: I am using a custom backend other than Python.
• No: 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/Beta Update Channel.

• Tested on SteamOS Preview Update Channel.

[TrainDoctor]

Code review checks out. Good for testing store.

[PartyWumpus]

changes after rewrite also look good

[KP2048]

@TrainDoctor can this get merged, or at least testing store?

Stale, MetaDeck has been updated since

[EMERALD0874]

Approved and sent to testing store

[KP2048]

Thanks!

[AAGaming00]

btw this fails if the settings.json doesn't exist lol

[AAGaming00]

still getting python errors even after making one. will get logs when i can

[KP2048]

Will fix and push a new version in a bit, need to fix my Hyprland setup

[KP2048]

@AAGaming00 can you check and verify it works now?