Add CheatDeck 2 to Plugin Store

[ilukezippo]

Add CheatDeck 2 to Plugin Store

CheatDeck 2 is a Decky Loader plugin for launching sidecar programs and managing launch options on Steam Deck. It is a GPL-3.0-or-later fork of CheatDeck by SheffeyG, which is already on the store — original authorship is credited in the README (Acknowledgments) and LICENSE.

Beyond the original CheatDeck, CheatDeck 2 adds:

• A Trainers tab that searches FLiNG Trainer by game name from Gaming Mode, downloads and extracts the selected trainer, and automatically sets its .exe as the Sidecar Program. The original CheatDeck has no trainer discovery/download feature — users must manually source and select a sidecar program themselves.
• A reliability fix/workaround for Sidecar Program launches on Proton/Wine builds where Proton's own PROTON_REMOTE_DEBUG_CMD hook is silently broken (see GloriousEggroll/proton-ge-custom#664), via an additional wrapper-script launch-option prefix that runs alongside Proton's own hook.

Repo: https://github.com/ilukezippo/CheatDeck2

Task Checklist

Developer

• 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.
• Generative AI was NOT used to write a majority of the code I am submitting.

Plugin

• 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 provides more/alternative functionality to a plugin already on the store.

Backend

• 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.

Community

• I have tested and left feedback on two other pull requests for new or updating plugins.
• I have commented links to my testing report in this PR.

Testing

• Tested by a third party on SteamOS Stable or Beta update channel.

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[github-actions]

This pull request is stale as no updates or testing reports have been posted within the last 7 days. Please ensure you are actively recruiting testers or resolving the issues discussed. If you do not remove the stale label or comment, this will be closed in 7 days. Please close this pull request if you need more time to resolve issues so we can keep our repo healthy.