Copilot review ruleset

[thehesiod]

@jakob-keller I think I've enabled copilot reviews for new master PRs via ruleset. Hopefully doesn't mess things up! Let me know if you're seeing any issues.

[thehesiod]

for reference we're using gemini at work and it's proved pretty useful

[thehesiod]

hmm, @webknjaz do we have opensource seats available for copilot reviews on aiolibs?

[webknjaz]

There's no paid subscriptions in the org. But if you set up auto-requesting reviews from copilot, it'll use the contributor subscriptions if they have it.

[thehesiod]

I thought it was free for open source projects

[webknjaz]

I'll probably import some of the rulesets I got from other projects to replace legacy branch protection in full when I have a minute.