Function api_controller_with_fk_template 

pub fn api_controller_with_fk_template(
    name: &str,
    snake_name: &str,
    plural_snake: &str,
    form_fields: &str,
    update_fields: &str,
    insert_fields: &str,
    foreign_keys: &[ForeignKeyField],
) -> String

Template for generating API-only controller with FK nested data support