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## Summary This adds a `ruff rule --all` switch that prints out a human-readable Markdown or a machine-readable JSON document of the lint rules known to Ruff. I needed a machine-readable document of the rules [for a project](https://github.com/astral-sh/ruff/discussions/5078), and figured it could be useful for other people – or tooling! – to be able to interrogate Ruff about its arcane knowledge. The JSON output is an array of the same objects printed by `ruff rule --format=json`. ## Test Plan I ran `ruff rule --all --format=json`. I think more might be needed, but maybe a snapshot test is overkill?