Add vendor string to RGBController API and update all controllers with vendor information, add vendor to device information page

Controllers/SapphireGPUController/RGBController_SapphireGPU.cpp

@@ -14,6 +14,7 @@ RGBController_SapphireGPU::RGBController_SapphireGPU(SapphireGPUController* sapp
     sapphire = sapphire_ptr;
 
     name        = "Sapphire GPU";
+    vendor      = "Sapphire";
     description = "Sapphire GPU";
     location    = sapphire->GetDeviceLocation();