Camera Backpack Mount for wide straps

Remixed the Camera Backpack Mount since I needed one for a wider backpack strap. This version supports up to 80mm wide straps. The rest of the parts fit in perfectly.

Also included are:
* Button lock for M4 nuts. I tapped some threads onto the metal rod for easier removal.
* A 3D printed wire guide. Since I don't own an actual 2D printer I created the guide as a 3D model.

Printed mine with 4 perimeters and 50% gyroid infill. For the rest of the instructions follow the [source](https://www.thingiverse.com/thing:3771579)