[Qualify of Life] Blinking the controller's LED during file discovery

[Raytwo]

Have you read the disclaimer before proceeding?

• [X] I have read the disclaimer.

Explain what could get improvements.

File discovery can take a lot of time depending on the quantity of mods to load, and there currently no visual indicator of when it starts, when it ends, or if something is happening at all while you wait (outside of checking logs).

It'd be great to provide a visual cue that something is happening while the user waits.

How could we make this better?

We could have the LED blink or stay still for as long as file discovery is ongoing, until the day we can eventually use NVN to display something on screen instead.

[Raytwo]

This would probably requires implementing the feature in ninput so everybody can make use of it.