chore(lib): change seed to key, and add kwargs

[jeertmans]

No description provided.

[codecov]

Codecov Report

Patch coverage: 46.66% and project coverage change: -1.08% ⚠️

Comparison is base (833cfd1) 62.41% compared to head (cf48d57) 61.33%.

❗ Current head cf48d57 differs from pull request most recent head 0425941. Consider uploading reports for the commit 0425941 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #13      +/-   ##
==========================================
- Coverage   62.41%   61.33%   -1.08%     
==========================================
  Files           5        5              
  Lines         455      463       +8     
==========================================
  Hits          284      284              
- Misses        171      179       +8     

Files Changed	Coverage Δ
differt2d/optimize.py	100.00% <ø> (ø)
differt2d/scene.py	0.00% <0.00%> (ø)
differt2d/geometry.py	79.11% <100.00%> (+0.09%)	⬆️

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