STYLE: Transition to ruff for code formatting

[jhlegarreta]

Transition to ruff for code formatting in line with the rest of the nipreps repositories.

Drop the flake8 W503 rule, which is not implemented by ruff.

Add a GHA workflow to ensure that contributions not complying with the style are detected.

Format the source code accordingly.

[codecov]

Codecov Report

Attention: Patch coverage is 83.69565% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 58.63%. Comparing base (ba1f12a) to head (d8f3beb).
Report is 15 commits behind head on main.

Files	Patch %	Lines
nireports/reportlets/utils.py	66.66%	3 Missing ⚠️
nireports/interfaces/reporting/base.py	60.00%	2 Missing ⚠️
nireports/reportlets/modality/dwi.py	50.00%	2 Missing ⚠️
nireports/reportlets/mosaic.py	85.71%	2 Missing ⚠️
nireports/reportlets/notebook.py	50.00%	2 Missing ⚠️
nireports/reportlets/nuisance.py	71.42%	1 Missing and 1 partial ⚠️
nireports/interfaces/fmri.py	80.00%	1 Missing ⚠️
nireports/interfaces/mosaic.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #114      +/-   ##
==========================================
+ Coverage   58.45%   58.63%   +0.18%     
==========================================
  Files          22       22              
  Lines        2094     2096       +2     
  Branches      322      365      +43     
==========================================
+ Hits         1224     1229       +5     
+ Misses        787      783       -4     
- Partials       83       84       +1     

Flag	Coverage Δ
unittests	58.47% <83.69%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jhlegarreta]

A few notes:

• The isort, black and flake8 rules were not being previously enforced anyways 😬.

• It looks like these lines
  https://github.com/nipreps/eddymotion/blob/main/.github/workflows/contrib.yml#L22-L25
  fix silently the errors:
  https://github.com/nipreps/nireports/actions/runs/9039088266/job/24841362350?pr=114

  I this PR I have changed those lines to
  https://github.com/nipreps/nireports/pull/114/files#diff-254a142c6921a1cfd1e55d3e3070a5ce40a95632c0b3449dc51f0746aa8b6bcaR24

Which is more comprehensive (?), as it runs all pre-commit hooks (not only ruff). Otherwise, we may need to add the --show-fixes or --show-diff-on-failure flags.

So the same is probably happening across all nipreps repositories 😬.

• I would leave out for now the B019 and C901 errors: fixing those requires more time.

[jhlegarreta]

@effigies @oesteban Should we add B019 and C901 to the whitelist until we have time to look at them?

[effigies]

@jhlegarreta Yes, let's ignore those for now.