1610 CNC ziptied X/Y endstop mounts

Tried some other endstop mounts, but they were more complicated than I thought was necessary and tended to stick out too much.

These are about as minimalist as you can get without just gluing the endstop directly to the rail bracket.

Clip the endstop to the mount, slip the end in next to the bracket bolt (you might need to loosen it a hair), and *tightly* zip tie in place.

For the Y axis, there's a couple of trigger blocks that mount underneath. Just loosen the mounting bolt, slip the a