Initial commit for the Gigabyte 2060 Super Gaming OC 3X V2 GPU

+ Add id to pci_ids.h
+ Register detector in GigabyteRGBFusionGPUControllerDetect.cpp
+ Link to [webpage](https://www.gigabyte.com/Graphics-Card/GV-N206SGAMING-OC-8GD-rev-20#kf)
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