HyperCube X-Endstop Attacher

Because I use the
Hypercube xy_joiner_timing_20T_H_pulleys (see. https://www.thingiverse.com/thing:2288561), My X-Carriage's x-endstop can't attach the left-side xy-joiner.

So I create the attacher printing part under the left xy-joiner.