Pi camera mount on Z-axis for Prusa MK3

This is a Z-axis mount for the Pi Camera Module v2 for the Prusa i3 MK3. It puts your Pi camera at a level where you can clearly see the nozzle, so you can tell from the video stream if a blob is building.

I made this using [ThomasDrafting](https://www.thingiverse.com/ThomasDrafting/about)'s design. I lowered the mount arm that attaches to the motor for better alignment with the nozzle. I then remixed the camera mount to hold a Pi camera module instead, with room for the ribbon cable to pass