use black pre-commit

[12rambau]

Subject: lint the lib with pre-commits

Feature or Bugfix

Refactoring

Purpose

• As mentione in the associated issue if one want's to participate in the development of Sphinx, the linter is only executed on Github side. using pre-commits, we could get a more consistent linting test (as everyone would run the same version on the same generated envorionment) and make sure anything that make its way to Github is nicely shaped.

Detail

• add pre-commits
• execute pre-commits in the linting github action
• use black (https://github.com/psf/black)
• use ruff (https://github.com/charliermarsh/ruff)

Relates

Fix #11205

[AA-Turner]

This was proposed earlier and rejected: #9955

I'm closing for now, thank you for the PR though, and please do look at other open issues!

A

[12rambau]

thanks for letting me know. note that i did an extra PR (#11204) and the lack of automation for formatting lead me to this PR and the related issue which was well welcolmed by others: #11205.

If black itself is an issue what about checking your existing linter (flake8 + ruff + isort) with pre-commits ?