Mob pathing additions

[Volte6]

Description

Adds additional scriptability around pathing, and fixes some small bugs and quirks.

Changes

• Add scripting documentation for actors and mobs
• Rewrote parts of lakeworker script to use pathfinding.
• Improved lakeworker script to do a little more while pathing.
• Added script event functions for various stages of a path.
• Fixed misbehavior of mob shout command.
• Updated command processing so that mobs subject to similar waiting rules as players when commands are queued with delays.
• Added caching for mobs that cannot find a path home.
• Mobs that can't go home receive an adjective lost
• Fixed some conversation bugginess, added some caching
• Moved Rodric to frostfang folder, where he should be.
• Improved Rodric scripting slightly to have some more interesting behavior.