Project Predator: Nerf Stryfe mod

See [hivemonkey.com](https://hivemonkey.com/project-predator-part-one) for the full project writeup, including electronics, code, Stryfe modifications, etc.

This is a case specifically designed to fit on the left side of a Nerf Stryfe and mount a particular homebrew electronics package, consisting of a Raspberry Pi Zero fitted with a Pimoroni Rainbow Hat and an ultrasonic rangefinder. The LEDs, alphanumeric display, and capacitive buttons are all available from the back of the case while the