Force pytest to run pre-push instead of pre-commit

[phw]

Summary

• This is a…
  • Bug fix
  • Feature addition
  • Refactoring
  • Minor / simple change (like a typo)
  • Other
• Describe this change in 1-2 sentences:

Problem

I personally find the pytest run on every commit a bit annoying. This makes every commit take quite some time, while I can easily run pytest on demand and do so during development anyway. I'd rather prefer to run pytest mandatorily pre-push.

This PR changes the pre-commit configuration to setup both a pre-commit and pre-push hook and run pytest only pre-push. All other tasks will be run both pre-commit and pre-push.

One needs to re-run pre-commit install to apply the changes.

This is now a push can look like with this config:

(picard) phw@bender ~/devel/musicbrainz/picard % git push phw
trim trailing whitespace.................................................Passed
fix end of files.........................................................Passed
check yaml...............................................................Passed
mixed line ending........................................................Passed
ruff (legacy alias)..................................(no files to check)Skipped
ruff format..........................................(no files to check)Skipped
Sync uv.lock with pyproject.toml.........................................Passed
pip-compile requirements.txt.............................................Passed
pip-compile requirements-build.txt.......................................Passed
pip-compile requirements-dev.txt.........................................Passed
pip-compile requirements-plugins.txt.....................................Passed
Run pytest...............................................................Passed
Objekte aufzählen: 5, fertig.
Zähle Objekte: 100% (5/5), fertig.
Delta-Kompression verwendet bis zu 16 Threads.
Komprimiere Objekte: 100% (3/3), fertig.
Schreibe Objekte: 100% (3/3), 1021 Bytes | 1021.00 KiB/s, fertig.
Gesamt 3 (Delta 2), Wiederverwendet 0 (Delta 0), Pack wiederverwendet 0
remote: Resolving deltas: 100% (2/2), completed with 2 local objects.
remote: 
remote: Create a pull request for 'test' on GitHub by visiting:
remote:      https://github.com/phw/picard/pull/new/test
remote: 
To github.com:phw/picard.git
 * [new branch]          test -> test

[phw]

@zas @knguyen1 Up for discussion

[zas]

It looks fine to me, I agree running tests on each commit is a bit annoying.

[knguyen1]

@zas @knguyen1 Up for discussion

This is a good idea. I like this change.