Pi Camera Mount for Ender 3 v2

After printing and using the original pi camera mount in https://www.thingiverse.com/thing:4761307, I remixed a mirrored mid arm to extend the camera mount and designed two washers to increase the tightness of screws.

25 Feb 2022: Added a camera bracket for Pi camera such as this https://core-electronics.com.au/raspberry-pi-camera-board-night-vision-adjustable-focus-lens-5mp.html