implement message to lock during optimisation

src/main/java/fr/jaquin/bdlg/planner/websockets/messages/PlanningUpdateMessage.java

@@ -2,7 +2,7 @@ package fr.jaquin.bdlg.planner.websockets.messages;
 
 public class PlanningUpdateMessage {
   public enum PlanningUpdateMethod {
-    join, leave, toast, addCreneau, removeCreneau, editCreneau, addBenevole2Creneau, removeBenevole2Creneau, clearBenevole2Creneau, addCreneauGroup, addCreneauGroupAt, removeCreneauGroup, editCreneauGroup, reorderCreneauGroup, addBenevole, removeBenevole, editBenevole, addConstraint, removeConstraint, editConstraint, newVersion
+    join, leave, toast, optiStart, optiStop, addCreneau, removeCreneau, editCreneau, addBenevole2Creneau, removeBenevole2Creneau, clearBenevole2Creneau, addCreneauGroup, addCreneauGroupAt, removeCreneauGroup, editCreneauGroup, reorderCreneauGroup, addBenevole, removeBenevole, editBenevole, addConstraint, removeConstraint, editConstraint, newVersion
   }
 
   private String uuid;