Add AI-Driven Chat System for NPC Interactions with LLM Integration

[QianZhang19]

I will add an AI-driven chat system in order to achieve immersive, interesting and contextual conversation interaction between NPCs and the game player

I have implemented a basic player presence in the game:

• Built player position tracking and storage system
• Built backend endpoints for player position updates
• Built initial chat message infrastructure

Next step

1. Set up LLM backend connection
2. Create a trigger system for NPC-initiated conversations
3. Fine-tune LLM responses to maintain consistent character qualities

I welcome all comments and suggestions for this contribution

[Emiyaaaaa]

Can you update the documentation and user guide?