enh: project-onto-surface point data label operations
enh: project-onto-surface point data label operations

schuhschuh/MIRTK,stefanpsz/MIRTK,stefanpsz/MIRTK,BioMedIA/MIRTK,schuhschuh/MIRTK,stefanpsz/MIRTK,schuhschuh/MIRTK,stefanpsz/MIRTK,BioMedIA/MIRTK,schuhschuh/MIRTK,BioMedIA/MIRTK,BioMedIA/MIRTK