Various scripts for different functions

Nicole Portas 813451b4c6 improved mesh to step script 3 settimane fa
exif_change_date.py d02326aa9e improvements 2 mesi fa
mesh_to_step.py 813451b4c6 improved mesh to step script 3 settimane fa
repack_slicer.sh f1dd315015 adding useful scripts 2 mesi fa