Mom NPC AI!

Courtesy of Michelle Nie's Github

The mom will now do things around the store with a code "brain"!

New features:

• AI State Machine base
• Mom AI state machine (4 functioning states: Shopping, Thinking, Patrol, and Pursue)
• Placeholder UI over mom's head

This release has 2 versions (for testing purposes):
Version A: Mom has 11 things to shop in the store before she starts pursuing the player!
Version B: Mom only has 3 things to shop in the store before the starts pursuing the player.

Known issues:

• Mom pathfinding is buggy and sometimes the path she takes is jittery.
• After the mom catches you and brings you back to the cart, the Mom AI & game are in a broken state (game needs to be restart to play again)