BIQU Nebula to Picobilical Toolhead Board Adapter for Dragon Burner

I swapped out the extruder on my Voron v0.2 Dragon Burner toolhead with the new BIQU Nebula and needed a way to mount the existing Picobilical toolhead PCB onto the back of the new extruder. This remix relocates the screw holes to fit the Nebula. You'll need to replace the two screws that extend from the back of the Nebula's extruder motor with longer ones. I used M3x40 flat head screws, and that gives enough extra length to screw into the spacers.