Add PyGerber 3 VM prototype

[Argmaster]

See #255

[codecov]

Codecov Report

Attention: Patch coverage is 86.88525% with 72 lines in your changes missing coverage. Please review.

Project coverage is 84.74%. Comparing base (fef1764) to head (0b40481).

Files	Patch %	Lines
src/pygerber/vm/types/color.py	58.20%	28 Missing ⚠️
src/pygerber/vm/types/unit.py	73.43%	17 Missing ⚠️
src/pygerber/vm/pillow/vm.py	89.65%	15 Missing ⚠️
src/pygerber/vm/types/vector.py	89.24%	10 Missing ⚠️
src/pygerber/vm/types/layer_id.py	90.00%	1 Missing ⚠️
src/pygerber/vm/types/model.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #254      +/-   ##
==========================================
+ Coverage   84.58%   84.74%   +0.15%     
==========================================
  Files         187      203      +16     
  Lines        7552     8100     +548     
==========================================
+ Hits         6388     6864     +476     
- Misses       1164     1236      +72     

Flag	Coverage Δ
unittests	84.74% <86.88%> (+0.15%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.