Scene graph implementation

[nashmit]

An interface/class implementation for affine transformations from which all the objects from the scene ( camera, geometry, planes, lights, debug info/geometry ) will be inherited. Each object should be able to change its reference frame.

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 14 lines in your changes are missing coverage. Please review.

Project coverage is 88.95%. Comparing base (8039f4d) to head (b3287af).

Files	Patch %	Lines
gui/rendering/Node.cpp	91.46%	7 Missing ⚠️
gui/widgets/qopenglmousetracker.cpp	56.25%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #986      +/-   ##
==========================================
- Coverage   89.29%   88.95%   -0.34%     
==========================================
  Files         144      145       +1     
  Lines       14360    14417      +57     
==========================================
+ Hits        12823    12825       +2     
- Misses       1537     1592      +55     

Flag	Coverage Δ
cli	22.19% <0.00%> (-0.10%)	⬇️
core	49.20% <0.00%> (-0.20%)	⬇️
gui	70.28% <90.00%> (-0.27%)	⬇️
mainwindow	40.77% <8.57%> (-0.37%)	⬇️
sme	28.31% <0.00%> (-0.12%)	⬇️

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[lkeegan]

thanks, looks good, all minor comments

[sonarcloud]

Quality Gate passed

Issues
10 New issues
0 Accepted issues

Measures
0 Security Hotspots
89.4% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[lkeegan]

lgtm!