async fn add_teacher_grading(
    payload: Json<NewTeacherGradingDecision>,
    pool: Data<PgPool>,
    user: AuthUser,
) -> ControllerResult<Json<TeacherGradingDecision>>
Expand description

PUT /api/v0/main-frontend/exercise-slide-submissions/add_teacher_grading" - Adds a new teacher grading decision, without updating user exercise state