In-Game: [Android] Add support for using the OS's media folder

[LF21Hungry]

Is your feature request related to a problem?

I've gotten very frustrated at the fact the data folder on android ("storage/emulated/0/Android/data") is inaccessible because of scoped storage, a feature added by Google to prevent file access, thus preventing me from adding my mod-sprite loader using sprite_add (and the sprite_add_gif extension by YellowAfterLife) on android.

I'm aware this isn't Gamemaker's fault, but i'm confident my solution is very straightforward, would make sense to implement and would certainly be quite logical and easy-to-understand.

Describe the solution you'd like

I would like games made with gamemaker to be able to read sprites using sprite_add or do similar file-related actions like reading/writing txt files from the "Android/media/" folder additionally to or instead of the data folder, since "Android/data/" is inaccessible through file explorers without rooting your device.

It seems to not be affected by the scoped storage system android has introduced, as i realized when i was messing around in my file explorer, and likely doesn't need any additional permissions.

This could open up the ability to add mod support into your android games and possibly even more than that.