Bitaxe 60mm Fan Adapter for GeekPi w VR Vent

Many popular Bitaxe prints are inefficient, so I designed a new adapter to improve airflow to the heatsink and added venting to direct air onto the VR copper heatsinks. This dropped temps by ~10 °C. With a single Noctua A6x25 fan, I can push 2 TH/s while keeping the ASIC near 60 °C and VR under 80 °C. Rear airflow is still recommended to keep VR below 70 °C.