Function headless_lms_models::exercise_service_info::fetch_and_upsert_service_info

pub async fn fetch_and_upsert_service_info(
    conn: &mut PgConnection,
    exercise_service: &ExerciseService,
    fetch_service_info: impl Fn(Url) -> BoxFuture<'static, ModelResult<ExerciseServiceInfoApi>>
) -> ModelResult<ExerciseServiceInfo>