pre-commit-hook with ruff

[Lulus792]

Implemented pre-commit-hook with ruff. If installed it runs a lint and format check on the files.

Progress of the PR

• Change implemented (can be split into several points),
• docstring updated (if appropriate),
• update user guide (if appropriate),
• add a changelog entry in the upcoming_changes folder (see upcoming_changes/README.rst),
• ready for review.

Minimal example of the bug fix or the new feature

pre-commit install
pre-commit run --all-files

Note: not sure how to name the changelog entry

[jlaehne]

Thanks, looks good apart from one question relating to imports

[jlaehne]

We mention the code style in the contributor guide, so please change adapt that section:
https://docs.lumispy.org/en/stable/contributing.html#code-style

And add an intersphinx link to the section in the hyperspy dev guide:
https://hyperspy.org/hyperspy-doc/current/dev_guide/coding_style.html#coding-style

[jlaehne]

Failing test is fixed in #257

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (bcd4d5d) to head (a851759).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff     @@
##   main   #256   +/-   ##
===========================
===========================

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