Simplifying character creation, to specify name and type in user message. Lowered chat bubble a bit. New improved user message for system-character prompt. Added lots of examples outputs for system-chat prompt.

Added goals for "FOLLOW" and "UNFOLLOW", so Mob Entity types will follow the player. Refactored some code, to make this cleaner. GPT 3.5 still struggles to output the behaviors correctly, so I updated to GPT 4 Turbo.