build: move to tox

[GabDug]

• Test against Windows, MacOS
• Use tox with tox-uv, tox-pdm
• Add additional pre-commits
• Format pyproject.toml

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.55%. Comparing base (7e08191) to head (f67c66c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #29   +/-   ##
=======================================
  Coverage   94.55%   94.55%           
=======================================
  Files           9        9           
  Lines         459      459           
  Branches       80       80           
=======================================
  Hits          434      434           
  Misses         21       21           
  Partials        4        4           

Flag	Coverage Δ
unittests	94.33% <100.00%> (ø)

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