Stackable Dupont wires case

Stackable dupont wires case.

Three files to print :
- case_dupont_haut.stl : part for storing the wires.
To print twice.
Used for narrow and wide Dupont wires

- case_dupont_bas_large.stl : support base for case_dupont_haut.stl.
To print twice.
Used for wide Dupont wires

- case_dupont_bas_etroit.stl : support base for case_dupont_haut.stl.
To print twice.
Used for narrow Dupont wires

The pieces 'case_dupont_bas*' must be put on their flat part for printing.