Speed-up clang-tidy + test config changes

[henningkayser]

There are two somewhat major complaints around how we do clang-tidy testing:

1. We are missing clang-tidy fixes when changing the config, since we are only testing diffs
2. We are only testing diffs because full checks are horribly slow (2h32m on a recent run)

There supposedly is a low-hanging fruit that improves the situation, this industrial_ci PR has been around for a while and speeds up runtime considerably (tested internally).
@EzraBrooks has also suggested just using run_clang_tidy.py which would be just as easy, probably even reducing complexity of the CI config.

[130s]

There supposedly is a low-hanging fruit that improves the situation, this ros-industrial/industrial_ci#798 has been around for a while and speeds up runtime considerably (tested internally).

Oops, that's a shame (as one of the original authors). I'll look.

[github-actions]

This issue is being labeled as stale because it has been open 45 days with no activity. It will be automatically closed after another 45 days without follow-ups.

[EzraBrooks]

this is a really aggressive stale bot