Update Audio Loader to 1.6.0

[EMERALD0874]

Audio Loader

Audio Loader is a tool for changing existing UI sounds and adding music while navigating Steam.

Unfortunately, due to recent breakages including one caused by Decky now running in desktop mode, we do not have the time or knowledge to solve bugs with the music part of Audio Loader. We have decided to make it a legacy feature until it is fixed, requiring users to check a box saying they acknowledge bugs may not be fixed and to use our GitHub for support.

Checklist:

Developer Checklist

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

Plugin Checklist

• [x] I have verified that my plugin works properly on the Stable and Beta update channels of SteamOS.
• [x] 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.

• [x] Tested on SteamOS Preview Update Channel.