first add files

lib/sqlalchemy/event/__init__.py

@@ -0,0 +1,17 @@
+# event/__init__.py
+# Copyright (C) 2005-2022 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+
+from .api import CANCEL
+from .api import contains
+from .api import listen
+from .api import listens_for
+from .api import NO_RETVAL
+from .api import remove
+from .attr import RefCollection
+from .base import dispatcher
+from .base import Events
+from .legacy import _legacy_signature