Add base AI characters

[AndyTechGuy]

Completed on upload

• Adding a basic gooey character
• Giving this character a basic behavior

To be completed

Different behaviors:

• Run on sight
• Attack on sight
• Return "home" at night (To be completed in a different PR, too large for one)

To test

• Launch a game with the MetalRenegades module enabled.
• Use the command spawnPrefab <gooeyName>. (either friendlyGooey, neutralGooey, angryGooey, or scaredGooey)
• The gooey should spawn where the player is looking.

[AndyTechGuy]

This PR will now only include the addition of basic AI characters; spawning will be handled in a different PR.