Why isn't the Enum type used? (postgresql)

[RyPeck]

When sqlacodegen outputs a enum_column: Mapped[Optional[str]] = mapped_column(Enum()) for a postgresql table with an enum type - What's your approach to interacting with that column in Python?

It would be easier of the Enum itself was created in the output as something we could import instead of it only being created as an argument to mapped column. Similar to the example - https://docs.sqlalchemy.org/en/20/orm/declarative_tables.html#using-python-enum-or-pep-586-literal-types-in-the-type-map

[agronholm]

#408