HP DPS600PB mount

I wanted a more robust and reliable power supply. I never though about server power supplies, but those are reliable and robust.

Connecting the PSU is not that difficult and [discussed](https://www.thingiverse.com/groups/tevo-tarantula-owners/forums/general/topic:13259) in groups. I also configured Marlin to power up the PSU using Marlin (and M80 gcode command from OctoPrint).

I used three XT60 connectors and soldered them to the 12V pins on the PSU using 2mm² solid copper wire from a str