Function get_all_exercise_services_iframe_rendering_infos

pub async fn get_all_exercise_services_iframe_rendering_infos(
    conn: &mut PgConnection,
    fetch_service_info: impl Fn(Url) -> BoxFuture<'static, ModelResult<ExerciseServiceInfoApi>>,
) -> ModelResult<Vec<ExerciseServiceIframeRenderingInfo>>