Speedup PoseLabelmap with a smarter subvoxel browsing

Closes #14048
Merge branch '14048-poselabelmap-performance' into heat-diffusion

* 14048-poselabelmap-performance:
  Speedup PoseLabelmap with a smarter subvoxel browsing
Fix Linux compilation errors and warnings

Bash linux errors and warning fixes

See Issue #14025
Merge branch '14025-FixLinuxWarnings' into heat-diffusion

* 14025-FixLinuxWarnings:
  Fix Linux compilation errors and warnings
Add Model Quadric Clustering Decimation CLI

This CLI uses vtkQuadricClusteringFilter to decimate a polydata while
retaining the original geometry.

Issue #13987
Merge branch '13987-SkinToHeavy' into heat-diffusion

* 13987-SkinToHeavy:
  Add Model Quadric Clustering Decimation CLI