Support sea-orm

[Kunduin]

Hi~ This PR includes the necessary support for sea-orm, and the following syntax will now be accepted by the compiler.

#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq)]
#[sea_orm(table_name = "test_book")]
pub struct Model {
	#[sea_orm(primary_key)]
	pub id: FastStr,
}

[CLAassistant]

All committers have signed the CLA.

[PureWhiteWu]

Thanks very much for your contribution!