Add SUPPORTED.md file to list supported games

[thepwrtank18]

Is 4JLibs used in games other than Minecraft LCE (e.g. Banjo-Kazooie on XBLA)?

[Patoke]

I'm not entirely sure, though it would be a good README addition to show the games that this could support in the future (including new decompilation projects for other 4J games)

I'll keep this issue open as enhancement for this same reason