Lots of new stuff

What's new?
Changed "Copy" in the sub menu to "Select" to clear up confusion.
Added code for sorting the files by size and name (descending and ascending).
Altered behavior of the B button. End users shouldn't notice much of a difference.
Added settings GUI.
Began adding theme support.
Added ability to mount saves (experimental).
Improved file copying speeds.
Added zip extraction.
Added in app self updater.
And probably other stuff I'm forgetting about.

Just press minus to access the new settings menu.

If you would like to test features before they're officially released join my discord server and ask for the tester role. https://discord.gg/ZhRn3nn