Generalize Shape.split to support arbitrary splitting surfaces

[MatthiasJ1]

No description provided.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (3a5a4e5) 96.04% compared to head (eee38b7) 96.02%.

Files	Patch %	Lines
src/build123d/topology.py	84.61%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #427      +/-   ##
==========================================
- Coverage   96.04%   96.02%   -0.03%     
==========================================
  Files          24       24              
  Lines        7413     7422       +9     
==========================================
+ Hits         7120     7127       +7     
- Misses        293      295       +2     

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[gumyr]

I've added comments to the code. In general, all code must pass pylint (missing docstrings here) and have good test coverage.

[MatthiasJ1]

Interior point selection can be made significantly more robust but depends on support for either Plane-Face or Face-Face intersection (#328)