Ferris 0.2 - Compact

The Ferris 0.2 compact is a straight update from the 0.1 compact, which maintains the initial minimalist instincts.

Its form factor is the same as the Ferris Bling, except it gets to save about 2mm in the y dimension as mounting holes are removed.

Specific features:

Choc switches (PG 1350)
Choc spacing (18x17mm)
Width: 10.4 cm
Height: 8.8 cm
Height: 1.5 cm (from desk to top of keycap with MBK switch and 2mm rubber bumper)

Hardware status:

Working boards are yet to be printed and tested.

Firmware status:

Support coming to upstream qmk with this PR
Support coming to upstream zmk with this PR
Plan to write rust firmware for it eventually tracked in this issue