Add VARTA plugin

[HARd]

Add VARTA to Plugin Store

VARTA is a Decky Loader plugin that marks games in the Steam Library developed or published by hostile (Russian/Belarusian) or Ukrainian developers/publishers.

Key Features:

• Seamlessly integrates into the Steam Deck UI (Library capsules and Game Detail pages).
• Displays customizable text badges or icons to indicate the developer's origin.
• Dynamically fetches up-to-date data from the public VARTA API (api.varta.games).
• Provides an in-UI setting to tweak overlay opacities, colors, and badge positions.
• Allows users to report unlisted games directly from the Steam Deck interface.

This plugin provides a completely unique functionality for the Steam Deck community, helping users make informed decisions about the games in their library.

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.

[github-actions]

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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.

[Micahel-Kochetov]

I've tested it on my Steamdeck OLED, works perfectly fine with no unexpected behavior both in store and in the library. Quite similar to ProtonDB Badges, and placemett variations make it avalible to use both at the same time.

• SteamOS stable channel.
• Decky stable channel.