feat(game-server): add LiveKit API key, secret, and URL to environment variables

Author: mirza-mohammad24

docker-compose.prod.yml

@@ -30,6 +30,9 @@ services:
       - NODE_ENV=production
       - REDIS_URL=redis://:${REDIS_PASSWORD}@redis:6379
       - DATABASE_URL=${DATABASE_URL}
+      - LIVEKIT_API_KEY=${LIVEKIT_API_KEY}
+      - LIVEKIT_API_SECRET=${LIVEKIT_API_SECRET}
+      - LIVEKIT_URL=${LIVEKIT_URL}
     volumes:
       - ./server-logs:/app/logs
     depends_on: