Added animals AI.

 Added Gravestone as npc entites. Added animal NPC's SFX. 

Added 2nd Quest. WhisperingGrave, complete reward, sfx, quest completion. conditioning and integration to save system. 

Created new room, r_grave. 

Added stop motion for moving npcs when talking to them.

Fixed style of initial village.

 Added animals to project. 

Added chicken and sheep VFX. 

Created NPC system for random NPC movement (applied to animals only atm).