chore: remove top level types imports (#12)

Co-authored-by: Deep Singhvi <[email protected]>

Author: fern-support

.fernignore

@@ -5,3 +5,6 @@ src/vapi/assistants/types/update_assistant_dto_server_messages_item.py
 src/vapi/types/assistant_overrides_server_messages_item.py
 src/vapi/types/assistant_server_messages_item.py
 src/vapi/types/create_assistant_dto_server_messages_item.py
+
+# Reduce size of the 
+src/vapi/__init__.py