~jacqueline/pocket-reform-split-keyboard

tweak mounting holes
use picolock
whoops hole spacing
reroute and tweak layout
make the pcb a little taller, add a ground fill
fix indentation
Flesh out the i2c comms, add stubs for other bits
move things around in preparation for controller pcb+fw
Commit the pcb design
Add uploading + sketch out RAM usage (looks fine)
project skeleton