Add a simple OpenSCAD based tray style case

This could be extended to a full case but since the stacked height may
vary that requires some thought.
For dual cs setups both the top and bottom cs board could use their own
tray if the pico is stacked between the boards.

Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2 files changed