switch off setup.py and switch to pyproject.toml

[falkben]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.99%. Comparing base (c9157c5) to head (a3bb45b).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #345   +/-   ##
=======================================
  Coverage   85.99%   85.99%           
=======================================
  Files           8        8           
  Lines        1071     1071           
=======================================
  Hits          921      921           
  Misses        150      150           

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