ci: split branch and PR workflow to allow auto merge

[acolombier]

Since GH has no ability to specify which even is required for a required actions and skipped actions are considered successful (:grimacing:), this aims to restore auto-merge capability to using to explicit workflow for branch and PR, and remove the "Ready for merge" from the branch workflow

(Test edit)

[daschuer]

OK, let's try it. Thank you.

[daschuer]

The CI of this branch does not run. I have tried to edit the initial post as usually, but it does not restart the CI.

[acolombier]

I believe this is because it isn't merged yet - Actions will get created when merging, so right now the pull_request event didn't register yet. You should be able to test it in your fork

[daschuer]

Tested in my private repository and got:

 Invalid workflow file: .github/workflows/pr.yml#L1
(Line: 20, Col: 9): Job 'pre-commit' depends on unknown job 'stop-build'., (Line: 27, Col: 9): Job 'checks' depends on unknown job 'stop-build'., (Line: 35, Col: 9): Job 'build' depends on unknown job 'stop-build'., (Line: 46, Col: 9): Job 'ready' depends on job 'pre-commit' which creates a cycle in the dependency graph., (Line: 47, Col: 9): Job 'ready' depends on job 'checks' which creates a cycle in the dependency graph., (Line: 49, Col: 9): Job 'ready' depends on job 'build' which creates a cycle in the dependency graph.

https://github.com/daschuer/mixxx/actions/runs/19197911532