show mapping status in class tree

[ix0rai]

• displays next to class icon
• the icon for the top-level class is reloaded each time an entry is renamed
• hopefully not too bad for perf
• fixes some bugs in StatsGenerator because I needed it to :iea:
• fixes a bug in isObfuscated because I needed it to :iea:

picture:

notes:
fixes #53
sort of a quilt equivalent of FabricMC/Enigma#482
uses code written by @NebelNidas, I'd like to get permission from them before merging found a better way!

[ix0rai]

UPDATE ON THIS: when you run it on minecraft it freezes enigma for like a full minute because of all the calculations it's running, I need to make that better
on hold until it doesn't bring enigma to its knees

[ix0rai]

UPDATE ON THIS 2: fixed the lag

[ix0rai]

UPDATE ON THIS 3: everything is fixed now