doc/CodeList.xsd: Imported CodeList.xsd from the SADX Mod Loader distribution.
doc/CodeList.xsd: Added codeeof.
libmodutils: Added GoalRing.cpp and GoalRingModels.cpp from the SADX Mod Loader distribution.
GoalRingModels.cpp: Don't #include "SADXModLoader.h".

Only ninja.h and ModLoader/MemAccess.h are needed.

Moved arrayptrandlength() and related macros from SADXModLoader.h
to ModLoader/MemAccess.h.