Prusa Lack 2-Way Cable Corners

I modified the bottom rear corners pieces for the Prusa Lack enclosure to accomplish 2 things:

1. Save about 2 inches on power cable length. The original bottom corner piece has the cable cutout oriented towards the rear and wastes cable length. By moving the cable cutout towards the front I was able to avoid lengthening the power cable on the MK3. (Left version in thumbnail.)

2. Mirror the cable cutout to allow running cables out the side or the rear.

Either of these corner pieces ca