Update RGB Fusion 2 controller to new RGBController API. Reworked some of the RGB Fusion 2 controller code to be more consistent with the rest of the project.

OpenRGB.cpp

@@ -338,7 +338,7 @@ void DetectRGBControllers(void)
     DetectCorsairKeyboardControllers(rgb_controllers);
     DetectCorsairLightingNodeControllers(rgb_controllers);
     DetectThermaltakeRiingControllers(rgb_controllers);
-    //DetectRGBFusion2Controllers(rgb_controllers);
+    DetectRGBFusion2Controllers(rgb_controllers);
     
     DetectE131Controllers(rgb_controllers);