[Open Assets] Super Music v2.0.1

I just added a tiny PlayerThink hook that caused the entire mod to not error out.

Haven't worked on this for a while, so here's a brand-new update!

Changelog:
- You can now change super music for different characters.
- Added a "No Super Music option" available by typing supermusic none or supermusic off
- Changed S_ChangeMusic to a MusicChange hook.
- Removed listmusic

I realise now that there isn't a lot in the changelog but can anything really be done about that?

Anyway, I hope you enjoy this update!

Super Music now has mod support! To add compatibility to your characters (If you don't want custom super music to be overriden), you need to type:

Lua:

if supermusic then
    player.hassupermusic = true
end

Note that this value is the same as XMom's so that if your character already has XMom Hyper compatibility, you don't need to code in compatibility again.

Also I added more things to the listmusic command but I'm not doing all of it, there's too many tracks.

Added listmusic, which lists every music track's filename (but only the ones I can remember since I'm on a Chromebook and can't view srb2.pk3).