[NPC] Fully developed lifecycle of mobs

[mahmutakyol]

• Implement the attacking lifecycle
• Implement the tracking lifecycle (following the target)
• Implement the aggressive (some mobs could attack near players/mobs)
• Implement attacking between npcs (different nations could attack eachother in non-neutral maps)
• Implement the givingup lifecycle (if target is far away, mob should go back the regular spawn area)