Qidi X-Max Icarus BLTouch mount

To [measure the distance of the toolhead to the mesh for the klipper](https://www.klipper3d.org/Bed_Mesh.html) bed mesh (compensation), you need a probe like an BLTouch which needs to be mounted to the toolhead.

I've switched from the original Qidi Extruders to [humebeam](https://www.thingiverse.com/humebeam)'s [Icarus 2.1](https://www.thingiverse.com/thing:4968938) due to massive problems with the print quality. This switch also allowed me to add various measurement devices (like a dial gauge) to the front of the toolhead. Only a new adapter had to be designed to mount the BLTouch firmly in place. It follows the same principles as the original dial gauge holder but also uses the screw head of one of the fan screws to vertically stabilize the mount.

Additional materials required:

* 1x M3x20 screw for icarus holder (can be a little bit more or less in length)
* 3x M3 inserts ([ruthex](https://www.ruthex.de/collections/gewindeeinsatze/products/ruthex-gewindeeinsatz-m3-100-stuck-rx-m3x