Allow apps to be CODEOWNERS

[lukasz-mitka]

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General

Body

I'd like apps to be assignable as CODEOWNERS, so that they can give merge-worthy approval.

Why it's needed

I have scenarios where code review from CODEOWNERS is set in Rulesets.
So for some PRs (e.g. Depndabot) it's not possible to merge it automatically after bot only approval.

Why not disable ownership for particular files?
I want only non-major changes auto approved, so need real human fallback and protection.

Example

foo/ @org/real-team @apps/my-bot

Workarounds considered

CI

Technically it's possible to create some custom solution that would run github actions and set status checks.
That's messy and laboursome.

Service account

Have service account that would be assigned as codeowner where needed.
That's an additional cost of an account. Also a security threat as new credentials need to be handled.

Other discussions

Found this one: https://github.com/orgs/community/discussions/23064
But's it's a question and this is formal feature request.