MK3 style X-motor end for MK2(S) 3D Print Model

Summary
Added the mount for the endstop onto the MK3 X-motor end to fit MK2(S)
Use MK3 X-idler end in conjunction with this design.
Helps alleviate belt rubbing, twisting at the idler end AND easier belt tension adjustment.
You will need (4) 3x18mm for the trapezoidal nuts as the mounts are thicker.