EVGA GPU support

[emulamer]

This code is a bit of a hack, but it does work as intended for more modern EVGA GPUs. It was created for jacknet RGB sync and not having it as part of this repo is causing problems as the signatures on at least one of the abstract classes change between RGB.NET builds. Sending this PR to be considered for merging in to facilitate easier ongoing support in that project.

[Legion2]

@emulamer the binary RGB.NET.Devices.EVGA/EVGAProxy.exe should be in the ignored