Monster8 DIN clips

DIN clips for the Monster8. Fits both V1 and V2 MCU boards.

Uses less plastic than stock DIN mount from MKS. 

Can be printed on a V0's tiny bed.

Requires 4× M3-threaded heatset inserts, 5mm diameter, 4mm height. Print two copies of the STL and install the heatset inserts, then place the clips on the DIN rail before mounting the MCU.