Fix JavaParser crashing on anonymous inner classes

[NebelNidas]

Fixes the Found ".1" <FLOATING_POINT_LITERAL>, expected one of "<" "extends" "implements" "{" error that occurred because the following code didn't handle anonymous classes: https://github.com/sfPlayer1/Matcher/blob/6468d7023090c544e873d67f3117136119fb3b50/src/matcher/srcprocess/SrcDecorator.java#L34-L56

But it was kinda messy anyway, so I rewrote the whole thing to be more compact and legible.

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