Don't create attachment model unless weapon is active in hotbar
Added ForsakenEvent.NavBlockerAdded and ForsakenEvent.NavBlockerRemoved
Fixed placing foundations within a No Build Zone if its connected to another foundation
Call weapon item ActiveStart/ActiveEnd
Structures, loot spawners, and deployables register nav blockers and update them/remove them as needed
NPCs will auto snap to nav mesh and update their paths if needed as/when nav blockers are added