[decompiler] new features + fixes, + other jak2 fixes

[ManDude]

Fixes empty boxed arrays of strings breaking some decomp (ctywide-speech and race-info).

Adds decomp-as tag to decompiler types so that the static data decompiler can use macros like meters and seconds on fields that aren't of type meters or time-frame.

Adds override tag to decompiler types which overrides the type of field with that name. The type must be a child type of the original field's type (or the same type, but why would you do this?).

Fixes the camera being offset for drillmtn after loading palout once.

This is a huge refactor sadly.