Add PyGerber 3 Parser implementation

[Argmaster]

Major rewrite of parser infrastructure of PyGerber for 3.0.0 release

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 490 lines in your changes missing coverage. Please review.

Project coverage is 79.90%. Comparing base (0b40481) to head (6893a86).

Files	Patch %	Lines
src/pygerber/gerberx3/ast/visitor.py	0.00%	79 Missing ⚠️
src/pygerber/gerberx3/ast/nodes/model.py	0.00%	8 Missing ⚠️
src/pygerber/gerberx3/ast/nodes/base.py	0.00%	7 Missing ⚠️
...c/pygerber/gerberx3/ast/nodes/aperture/AB_close.py	0.00%	6 Missing ⚠️
...rc/pygerber/gerberx3/ast/nodes/aperture/AB_open.py	0.00%	6 Missing ⚠️
src/pygerber/gerberx3/ast/nodes/aperture/AD.py	0.00%	6 Missing ⚠️
...c/pygerber/gerberx3/ast/nodes/aperture/AM_close.py	0.00%	6 Missing ⚠️
...rc/pygerber/gerberx3/ast/nodes/aperture/AM_open.py	0.00%	6 Missing ⚠️
...c/pygerber/gerberx3/ast/nodes/aperture/SR_close.py	0.00%	6 Missing ⚠️
...rc/pygerber/gerberx3/ast/nodes/aperture/SR_open.py	0.00%	6 Missing ⚠️
... and 59 more

Additional details and impacted files

@@                    Coverage Diff                    @@
##           feature/pygerber-3-vm     #256      +/-   ##
=========================================================
- Coverage                  84.74%   79.90%   -4.84%     
=========================================================
  Files                        203      272      +69     
  Lines                       8100     8590     +490     
=========================================================
  Hits                        6864     6864              
- Misses                      1236     1726     +490     

Flag	Coverage Δ
unittests	79.90% <0.00%> (-4.84%)	⬇️

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.