8bitdo number pad shell

this is an alternate shell for the 8bitdo mechanical number pad, but it won't fit all the original's guts. see opened photo for reference.

this is designed as part of a larger project to use low profile keys.  if you don't shave down the screw attachment points between the boards, you may need to modify the freecad file to increase the spacing used between the 2 boards.

i moved the usb c port to the left side so it can fit into a future part through a usb c adapter.

buttons and mode switch covers are not necessarily going to fit the stock shell.