[wip] Add/pixi tasks

[LucaMarconato]

Adding dev tooling via pixi tasks.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.93%. Comparing base (6a3eef7) to head (126c672).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1097      +/-   ##
==========================================
- Coverage   91.96%   91.93%   -0.04%     
==========================================
  Files          51       51              
  Lines        7729     7772      +43     
==========================================
+ Hits         7108     7145      +37     
- Misses        621      627       +6     

see 2 files with indirect coverage changes

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