meshtastic seeed xiao tiny case

(It was suggested I call this the Meshtastic Golden Snitch!)

This is a fully parametric feature based model for a Xiao seeed meshtastic case.
This is likely the smallest possible case. I have tested this with PLA.

Features this case has:
* snap on lid
* slits to allow the stock antennas to be outside the case

Optional features:
* screw hole with backstop for a mounting screw or a thumbtack
* ring for hanging

These features and all dimensions can all be adjusted. This model is designed to use the OpenSCAD internal customizer extensions and uses some computationally intensive features; it does not work with thingiverse's customizer. Parts can be exported together or separately.

I have uploaded four variations of parts and a support enforcer for the ring. (No other support is needed.) I put both the lid and case in the same file for each version, although the support enforcer is separate.

You can turn on or off various features including the board model (used for visulaization