fix: Import Full/Empty from queue to prevent NameError on backpressure

inference.py

@@ -7,7 +7,7 @@ if "CUDA_VISIBLE_DEVICES" in os.environ:
 import logging
 import time
 from threading import RLock, Thread
-from queue import Queue, PriorityQueue
+from queue import Queue, PriorityQueue, Full, Empty
 from typing import Any, Dict, List, Optional, Sequence, Tuple
 
 import cv2