Proposal to have a script to check MR for common mistakes

Hi everyone,

I'd like to add a script to our ci-utilities to allow failure builds based
on regular mistakes that regular contributors or newcomers can make.

Like:
 - putting links to invent.kde.org in commits
 - having \since but the incorrect version
 - missing \since on new API
 - having links to bugs, instead of using our BUG:/CCBUG:

I have implemented them:
https://invent.kde.org/sysadmin/ci-utilities/-/merge_requests/700

And I am thinking about another one:
 - prevent commit message prefix with "fix:" or "feature"

As a dolphin maintainer and kio one, I really would enjoy those as they
will reduce the number of times I have to repeat myself.

All of those would be opt-in, not all projects have such preferences.
This would be similar to our clang-format check
https://invent.kde.org/sysadmin/ci-utilities/-/blob/master/run-clang-format.py?ref_type=heads
that a few projects have adopted (dolphin, Kwin)

Later I would like to add to those build failures comments on MR with
friendly instructions on how to fix them, or having suggestions, like the
expected version for \since.

Many FOSS projects have such bots/checks, It would be great to add that to
lessen the reviewer burden while upholding best practices.

What do you think?

-- 
Méven