Various scripts for different functions

Nicole Portas 15476b1570 Adding mesh_to_step script vor 2 Monaten
exif_change_date.py d02326aa9e improvements vor 2 Monaten
mesh_to_step.py 15476b1570 Adding mesh_to_step script vor 2 Monaten
repack_slicer.sh f1dd315015 adding useful scripts vor 2 Monaten