Add async_read and async_write (it doesnt work)

lerobot/common/utils/utils.py

@@ -17,7 +17,7 @@ import logging
 import os.path as osp
 import random
 from contextlib import contextmanager
-from datetime import datetime
+from datetime import datetime, timezone
 from pathlib import Path
 from typing import Any, Generator
 
@@ -172,3 +172,7 @@ def print_cuda_memory_usage():
     print("Maximum GPU Memory Allocated: {:.2f} MB".format(torch.cuda.max_memory_allocated(0) / 1024**2))
     print("Current GPU Memory Reserved: {:.2f} MB".format(torch.cuda.memory_reserved(0) / 1024**2))
     print("Maximum GPU Memory Reserved: {:.2f} MB".format(torch.cuda.max_memory_reserved(0) / 1024**2))
+
+
+def capture_timestamp_utc():
+    return datetime.now(timezone.utc)