fix(python): return ValueError if passed unknown args to connect() (#1265)

It's confusing to users that keyword arguments from the async API like
`storage_options` are accepted by `connect()`, but don't do anything. We
should error if unknown arguments are passed instead.

python/python/lancedb/__init__.py

@@ -107,6 +107,9 @@ def connect(
             request_thread_pool=request_thread_pool,
             **kwargs,
         )
+
+    if kwargs:
+        raise ValueError(f"Unknown keyword arguments: {kwargs}")
     return LanceDBConnection(uri, read_consistency_interval=read_consistency_interval)