Cucim-based extend mask

[maltekuehl]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 60.60606% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.10%. Comparing base (6c27126) to head (bbf51bd).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
spatiomic/segment/_extend_mask.py	53.57%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #22      +/-   ##
==========================================
- Coverage   77.51%   77.10%   -0.42%     
==========================================
  Files          54       54              
  Lines        1895     1878      -17     
==========================================
- Hits         1469     1448      -21     
- Misses        426      430       +4     

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