New AI for Mobs

[SamJBarney]

So here are the sections that I can currently think of as needing to be "componentized":

• Movement Types
  
• Attack Types
  
• Reactions to events (OnHit, OnEntitySighted, etc.)
  
• AI Logic (How it selects which actions to handle next)
  

What are some other things that y'all can think of to add?