3D Touch model

When I was designing my own bracket for my Geeetech Prusa i3 Pro B, I needed an OpenSCAD model to visualise and see how all parts fit together.

However, I didn't manage to find any proper model of 3D touch, so I had to design my own one.

Uploading this model here - may it will come in handy for someone else as well. It worked for me, but in case you find any issues with size, please let know

I used Trianglelab 2020 3D touch as the original part to measure the sizes.

The API is simple - just invoke "3d_touch" module. It accepts two optional parameters:
- "extended" (false by default) to draw it with the probe deployed
- "wires_extra_length" defines the length of wires above the base