Create DesireEngine for managing desires

Delete engine/desireEngine.js

Add Intention UI for player-facing display

Create IntentionModel for intention states

Implement Intention Engine with initialization and methods

Implement DesireUI for player-facing display

Add DesireModel for defining desire states

Implement Desire Engine for managing desires

Add Emotion UI for player emotional display

Add EmotionModel for managing emotional states

Create emotionEngine.js

Initial commit