Add Decky Translator

[cat-in-a-box]

Add Decky Translator to Plugin Store

Decky Translator captures your Steam Deck screen, recognizes text using OCR, translates it and shows the result as overlay on top of the game.

Currently there are 3 OCR providers to choose from:

• RapidOCR (runs entirely on-device using ONNX Runtime with PaddleOCR models. No internet or API keys needed)
• OCR.space (EU-based free cloud API. Faster and better accuracy, but has time limits)
• Google Cloud Vision (best accuracy and speed, requires API key)

And 2 Translation providers:

• Google Translate (free)
• Google Cloud Translation (higher quality translation, requires API key)

To make RapidOCR work on device, required models and Python 3.11 runtime (this version is required by RapidOCR) are downloaded during install via remote_binary and then unpacked by the plugin. This dependency archive is built from public FOSS sources and published as a GitHub Release artifact by the project's CI workflow.

Button detection works by reading raw HID input directly from the Steam Deck controller (/dev/hidraw) to allow button-cobminations for quick translation, as previously working method to detect buttons stopped working around half a year ago after Steam update

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.

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.
• 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.

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.

Plugin testing reports:
#977 (comment)
#970 (comment)

Testing

• Tested by a third party on SteamOS Preview update channel.

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