Fill in serial field for all HID controllers using hidapi

Controllers/LogitechController/RGBController_LogitechG403.cpp

@@ -18,6 +18,7 @@ RGBController_LogitechG403::RGBController_LogitechG403(LogitechG403Controller* l
     type        = DEVICE_TYPE_MOUSE;
     description = "Logitech Mouse Device";
     location    = logitech->GetDeviceLocation();
+    serial      = logitech->GetSerialString();
 
     mode Static;
     Static.name                     = "Static";