fix: updating foreign keys when adding new entity to the db

MyINPulse-back/src/main/java/enseirb/myinpulse/model/Appointment.java

@@ -112,6 +112,10 @@ public class Appointment {
         return listSectionCell;
     }
 
+    public void updateListSectionCell(SectionCell sectionCell) {
+        listSectionCell.add(sectionCell);
+    }
+
     public Report getAppointmentReport() {
         return report;
     }