SQUASH: Sound: Faux Sound Control: Add per-channel controls

[ShiroNoKarasu]

Now bringing another previously FauxSound app exclusive. Per-channel controls.

This needs a minor cleanup (remove some leftover comments), and it doesnt look very pretty, but it works. My previous implementation actually looked much worse.

[Grarak]

This needs some serious work. It's a big mess

[ShiroNoKarasu]

I know its a mess lol. Will work on it soon