Function headless_lms_models::course_instances::reset_progress_on_course_instance_for_user

pub async fn reset_progress_on_course_instance_for_user(
    conn: &mut PgConnection,
    user_id: Uuid,
    course_instance_id: Uuid
) -> ModelResult<()>

Deletes submissions, peer reviews, points and etc. for a course and user. Main purpose is for teachers who are testing their course with their own accounts.