Add Text Documentation for 3D printed hardware

[goldfishlaser]

Is your feature request related to a problem? Please describe.
This request defines the scope of the 3D printed hardware documentation.

Describe the solution you'd like
The 3D-printed hardware documentation will cover:

• Explanation of the purpose of a 3D-printed hardware version of BusKill cable
• Precautions and prerequisites
• Tools and materials needed
• Print files and settings
• Build steps with photos

Describe alternatives you've considered
There is no alternative to having complete documentation on the site, but in the meantime, incomplete documentation is available on the usb a magnetic breakaway and goldfishlaser.github.io/3DPBKDoc/

Additional context
Out of scope: Video -- Adding a video will be tracked as a separate issue
I'd like this issue to be assigned to me and linked as to be solved by #90