Add remaining linkkf core files

linkkf/lib/utils.py

@@ -0,0 +1,17 @@
+import time
+import logging
+from functools import wraps
+
+logger = logging.getLogger("linkkf")
+
+def linkkf_async_timeit(func):
+    @wraps(func)
+    async def wrapper(*args, **kwargs):
+        start_time = time.perf_counter()
+        try:
+            return await func(*args, **kwargs)
+        finally:
+            total_time = time.perf_counter() - start_time
+            logger.debug("%s%r %r took %.4fs", func.__name__, args, kwargs, total_time)
+
+    return wrapper