CR-10 V3 BLTouch Deeper Mount

Slight tweak on the TinyMachines CR-10 V2 BLTouch mount they talk about in this video: https://www.youtube.com/watch?v=gHQ4WroVD6k

For my use case the screws that came with my BLTouch were shorter than what the TinyMachines folks show in the video so I made the slot for the M3 nuts deeper.

Instead of there being 5mm of plastic between the head of the screw and the bottom of the nut there is now only 2mm. This worked perfectly for me.

Sorry I didn't have the original OBJ files for the TinyMachines mount so my OBJ file only includes the hole extensions I added.

The offsets I used for this mount are:

`define NOZZLE_TO_PROBE_OFFSET { 44, 7, 0 }`