public async Task <IActionResult> DeletePlan(int employeeId, [FromBody] CalendarEvent @event)
        {
            db.WorkingPlans.Remove(WorkingPlanExtensions.FromCalendarEvent(@event, employeeId));

            await db.SaveChangesAsync();

            return(NoContent());
        }
        public async Task <IActionResult> AddPlan(int employeeId, [FromBody] CalendarEvent @event)
        {
            var newNote = WorkingPlanExtensions.FromCalendarEvent(@event, employeeId);

            db.WorkingPlans.Add(newNote);
            await db.SaveChangesAsync();

            return(Ok(newNote.ToCalendarEvent()));
        }