Allow negative scale for MeshShape

[jslee02]

This PR supports negative scaling in MeshShape as requested #1839. While it's not extensively tested yet, initial results are promising. Scaling the pelvis mesh by positive (5) and negative (-5) values worked as expected in preliminary tests.

Pelvis with scale(5, 5, 5):

Screencast.from.2024-08-31.08-19-48.mp4

Pelvis with scale(-5, -5, -5):

Screencast.from.2024-08-31.08-18-31.mp4

Resolves #1839.

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• Document new methods and classes
• Format new code files using ClangFormat by running make format
• Build with -DDART_TREAT_WARNINGS_AS_ERRORS=ON and resolve all the compile warnings

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[codecov]

Codecov Report

Attention: Patch coverage is 72.22222% with 5 lines in your changes missing coverage. Please review.

Project coverage is 61.55%. Comparing base (9feb578) to head (8f2c9c9).
Report is 1 commits behind head on release-6.14.

Files with missing lines	Patch %	Lines
dart/dynamics/MeshShape.cpp	76.92%	3 Missing ⚠️
python/dartpy/dynamics/Shape.cpp	60.00%	2 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           release-6.14    #1841      +/-   ##
================================================
- Coverage         61.57%   61.55%   -0.02%     
================================================
  Files               490      490              
  Lines             46021    46010      -11     
================================================
- Hits              28337    28323      -14     
- Misses            17684    17687       +3     

Files with missing lines	Coverage Δ
python/dartpy/dynamics/Shape.cpp	64.72% <60.00%> (+0.03%)	⬆️
dart/dynamics/MeshShape.cpp	29.15% <76.92%> (-4.07%)	⬇️