style(qa): use ruff for linting and formatting

[manawasp]

Hey,

Following the proposal here this PR proposal switch linter and formatter to ruff:

• Updated .gitignore following the one here: marcosschroh/python-schema-registry-client

• Updated: tox.init / Makefile / pre-commit

• Applied linter & formatter:

  • Most changes are about type mismatch my_var: str = None => my_var: Optional[str] = None

  • Drop unused # noqa rules

  • Regrouped some requirements under the dev.txt

  • Some formatting note:

    def __delitem__(self, i: int) -> None: ...

    will be changed to

    def __delitem__(self, i: int) -> None:
        ...

    The first formatting version was introduced by black 2024 version (~ a month ago), ruff will support this soon. In my opinion just following the chosen tool available features, going backward then forward is fine.

  ---

  1. I used ruff.toml for the configuration instead of the pyproject.toml, I prefer to provide a dedicated PR to regroup all configuration under the pyproject.toml.
  2. I see the initial line-length setup is 79, black/ruff default line length is 88 I would tend to match this, but before applying this I would like to know your opinion.
  3. Also I would tend to have less requirements files default.txt, test.txt, docs.txt:
     • dev.txt => test.txt (I believe which people setup development will also need the test environment)
     • ci.txt => test.txt (just containing pytest-cov)
     • dist.txt => test.txt & docs.txt, not totally sure if possible as I see wheel, twine & packaging inside.

[wbarnha]

I love ruff, let's do it! I'll review the PR but otherwise everything looks good so far.