* Split z64.h more
* Cleanup
Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>
* forward declare `OcarinaStaff` struct for pointer members in message and pause structs
* define `struct OcarinaStaff`, not just the `OcarinaStaff` type
* PauseBgPreRenderState back to z64.h
* Move PauseBgPreRenderState and TransitionTileStatus near the PlayState struct definition
Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>