Sunlu S2 Stabilized Base Mount print for MK3 & MK4

Original design was great but a little too much, reduced materials for efficiencies, also allows for printing on a MK4/3 without print modifications.

Cut the base height down by a few mm (4.6mm vs 8mm) recessed the screw position further in (to 1.4mm) allowing for a shorter screw (#6 - ¾") required to mount.