update gommon & use the Event class from it to allow easily clearing all handlers when the apphost exits to avoid leftover invalid event handlers in the rainbow event handler list.
More robust config application logic to ensure what needs to happen only happens once
This allows the user to change the controller LED while using Ryujinx.
Useful for PS4 and PS5 controllers as an example.
You can also use a spectrum-cycling Rainbow color option, or turn the LED off for DualSense controllers.
---------
Co-authored-by: Evan Husted <greem@greemdev.net>
