Extend Plugin API - Githubissues

Summary

Just, adding more APIs for plugins to consume. I.e. support for more game classes and singletons.

[ ] sMhCamera: Zooming, FOV, Camera position, target, orientation
[x] sQuest: More properties related to quest state. Primarily for querying.
[ ] Player: Access to stats, buffs, equipment, skills, etc.
[x] FSM: Allow hooking into FSM. (Might not be feasible due to a lot of FSMs simply not existing in memory)