Stand for 16 keys Macropad

A simple stand for the ["16 keys Macropad" by Druz320](https://www.thingiverse.com/thing:2778799). This provides a bed for the macropad and tilts it by ~15deg, making it slightly more comfortable to use.

I've included the F3D file in case you want to change this up. Thanks Druz320 for an awesome little project!