Aperture Science Extruder rotation visualizer

Another version of an Extruder Visualizer. Idea came from a comment from Shadow84 https://www.thingiverse.com/thing:2759852#comment-1789648 (link does not work when clicking, thanks Thingiverse) - it is an Aperture Science version.

One version with a little mount on the back for gluing a magnet on. Since I only had a small cube magnet, I printed it without the mount and just directly glued the magnet on in the middle.

I used Prusa Control to add a filament change in the middle to change fr