EMI: Stub more Lua_V2-functions, and read most parameters.

CompleteChore
GetSoundVolume
SetSoundVolume
UpdateSoundPosition
ImStateHasLooped
GetCameraPitch
PitchCamera
RollCamera
YawCamera
NukeAllScriptLocks
FRUTEY_Begin
FRUTEY_End

All get a bit meatier stubs with this, giving a bit more to work from whenever we end up needing to implement these.

The biggest question is if these stubs should go directly to their relevant files? as it is, they all are in lua_v2.cpp.