Updated Raspberry Pi 3/4 B+ Case with slot for camera cable

This is a remix of the latest Stamos "Raspberry Pi 3/4 B+ Case" version with tabs added to constrain board movement. This remix adds a slot for the camera cable.

This remix includes only the base part. You can download the covers from the original here: https://www.prusaprinters.org/prints/24942-raspberry-pi-34-b-case

A remix of the older version can be found here:

https://www.printables.com/model/32179-raspberry-pi-34-b-case-with-slot-for-camera-cable

License is according to the original part