Commodore 64 C64 keycap holder

This is a holder platform to store C64 keycap sets with the same layout as the C64.

There are two STLs:

- `c64_keyboard_panel_single.stl`: single piece, requires a bed >= 34cm
- `c64_keyboard_panel_split`: split in approximate halves, requires a bed >= 20cm

After installed, the space bar will hold the split parts together.

Both STLs include a single stub object you can print beforehand to check the actual fit.

Flat-headed (vs cross-headed) stubs are intentional as they should be easier to remove with pliers if they ever break inside the keycap.

OpenSCAD source included.