[FEATURE] Sound and Music Implementation

[Klus3kk]

Overview:
Integrate background music and sound effects for various NPC actions and game events. Music will set the ambiance, while sound effects will trigger based on NPC activities like gathering or moving.

Goals:

• Add background music that plays continuously during gameplay.
• Add sound effects for specific actions (e.g., walking, gathering, trading).
• Ensure sound and music are well-balanced and do not affect performance.

Testing:

• Verify that sound effects trigger at the appropriate times.
• Ensure music loops seamlessly and does not interfere with gameplay performance.