feat(gui): Smali code folding

[Mino260806]

Adds code folding for

• .class
• .method

[Mino260806]

I think this needs another method visitPatternStartOffsets() (uses matcher.start() not matcher.end())

Sorry for bad formatting I'm on phone

Edit: same for getStartMethodStartOffsets, it's my fault

[skylot]

@Mino260806 sorry, I undo method extract, because these methods are all different now 🙂

Edit:
Also, it is funny that it is still working well with any start/end offset 🤣