Fix compatibility with VTK and glad

[Meakk]

Fix compatibility with VTK master and the upcoming VTK 9.4 release.
VTK now uses glad instead of glew, making it possible to select GLX, EGL or OSMesa at runtime instead of building a specific backend.
Refactor the engine creation to use a factory in order to clarify which OpenGL context to use.

[github-actions]

You are modifying libf3d public API! ⚠️Please update bindings accordingly⚠️!
You can find them in their respective directories: python, java, webassembly.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.01%. Comparing base (da0a164) to head (a83b44e).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1631      +/-   ##
==========================================
+ Coverage   96.90%   97.01%   +0.10%     
==========================================
  Files         104      105       +1     
  Lines        7830     7935     +105     
==========================================
+ Hits         7588     7698     +110     
+ Misses        242      237       -5     

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[mwestphal]

small changes needed

[mwestphal]

check the regexp + baselines tests