[feature request] TreeMap chart for symbols

[Decencies]

It would be nice to incorporate a TreeMap view which displays the symbols found within the program.

Perhaps we could associate code with "Modules", where we group features of code which cooperate with each other. (this is only really helpful if the target program strips packages or uses package hierachy obfuscation)

See: This TreeMap for a visual reference.

We can also associate each (class) item with a color, indicating the % of mappings which have been associated with that symbol.