Derive Macro scylla_cql::macros::IntoUserType

#[derive(IntoUserType)]
{
    // Attributes available to this derive:
    #[scylla_crate]
}

Documentation for this macro can only be found in scylla crate - not in scylla-macros nor in scylla-cql. This is because of rustdocs limitations that are hard to explain here.