async fn post_new_plan(
payload: Json<CreateCourseDesignerPlanRequest>,
pool: Data<PgPool>,
user: AuthUser,
) -> ControllerResult<Json<CourseDesignerPlan>>async fn post_new_plan(
payload: Json<CreateCourseDesignerPlanRequest>,
pool: Data<PgPool>,
user: AuthUser,
) -> ControllerResult<Json<CourseDesignerPlan>>