ZeroBot - "Off-Road" Version -- Raspberry Pi Zero FPV Robot

This is a remix of Max Kern's great [ZeroBot](https://www.thingiverse.com/thing:2352440) robot (more on [Hackaday.io](https://hackaday.io/project/25092-zerobot-raspberry-pi-zero-fpv-robot)), with the following changes:

- Headlights
- Grooved tires
- Charging port
- Front panel holder.

Also, thank you Kelly Jordan for the inspiration with your [aggressive tank tread](https://www.thingiverse.com/thing:2227184).

Some extra parts are needed:
- 2 BC337 transistors
- 2 1.5K resistors
- 2 22Ω resistor (You may need to adjust this resistor's value, to provide enough current to drive your LEDs)
- 2 cheap flashlights ([like this one](https://www.aliexpress.com/item/Mini-Pocket-Flashlights-Carabina-Keychain-LED-Torch-Lamp-Light-Flashlight-For-Outdoor-Camping-Hiking-Emergency-Survival/32813588277.html?spm=a2g0s.8937460.0.0.NhYiw6)), to source the LED and lens.
- 1 Kcd11-101 switch ([easy to find](https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20170721084703&SearchTe