16mm PCB plates

Added PCB top and bottom plates to the 16mm PCB

• 1.6mm PCB top and bottom plates
• M2 spacers
• Gerbers
• Original post about 16mm switch spacing

The plates allow for plate mount switches to be used. The new Kailh switches and the Cherry speed switches are currently only available in plate mount. The shorter actuation point and a shorter bottom out (with o-rings) might be an improvement.

I also printed a Pro Micro pin out diagram and some verbiage about the power pins on the bottom plate.

Some pictures side by side with the plateless version.