lint: switch flake8 to Ruff

[Borda]

Checklist before merging this PR:

• Mentioned all issues that this PR fixes or addresses.
• Summarized the updates of this PR under Summary.
• Added an entry under Unreleased in the Changelog.

Fixes #2195

Summary

Switch lint flake8 to Ruff with the same basic checks.
As follow-up, we could also merge Black + pyupgrade + isort (after merging this one I'll prepare separate PRs for each of them)

Other Information

[madtoinou]

Thanks a lot for this contribution, some minor comments (mostly about fixing E721).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.01%. Comparing base (db570e6) to head (f91dfcf).

❗ Current head f91dfcf differs from pull request most recent head 8811614. Consider uploading reports for the commit 8811614 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2323      +/-   ##
==========================================
- Coverage   94.02%   94.01%   -0.02%     
==========================================
  Files         138      138              
  Lines       14201    14187      -14     
==========================================
- Hits        13353    13338      -15     
- Misses        848      849       +1     

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[Borda]

@madtoinou seem all is finally passing

[madtoinou]

LGTM, thanks a lot @Borda for initiating the transition to ruff!

I'll add an entry in the backlog, see if we can find a more elegant solution to these "type checks" to get ride of the #noqa in the long run.