Type to tell what if shuffle/repeat/rating controls are accessible

[tjhrulz]

Originally I had planned to have the plugin expose what all controls were available but thought that was to tedious. However having a simple what control set is visible would be nice.
Something simple like:
0 is none
1 is shuffle/repeat controls
2 is rating controls
3 is both.

Then a skin could only expose the buttons that are most likely to be missing in some players.

[tjhrulz]

I am scraping this idea in favor of using section variables to do an isSupported check. However I have decided that this will be part of Unified Now Playing which I plan to be the successor to this.