- Creature: update current waypoint to store nodeId and pathId
- MotionMaster: change variable type on GetMotionSlotType and GetMotionSlot to keep consistency and prevent errors (ASSERT is now no longer needed)
- UnitAI: add new waypoint hooks WaypointPathStarted and WaypointPathEnded
- SAI: handle WAYPOINT related events if creature is no escorting
* SMART_EVENT_WAYPOINT_RESUMED still not implemented for no escorting
TODO: the new hooks can save, now duplicated, logic on EscortAI and SAI
closes#20777
updates #20310
updates 21bd52cb99