created FavouriteRecipeMessage class

commons/src/main/java/commons/ws/messages/FavouriteRecipeMessage.java

@@ -0,0 +1,28 @@
+package commons.ws.messages;
+
+/**
+ * Message sent when a recipe becomes a favourite.
+ * @see commons.ws.messages.Message.Type#RECIPE_FAVOURITE
+ */
+public class FavouriteRecipeMessage implements Message{
+
+    private long recipeId;
+
+    public FavouriteRecipeMessage(long recipeId) {
+        this.recipeId = recipeId;
+    }
+
+    @Override
+    public Type getType() {
+        return Type.RECIPE_FAVOURITE;
+    }
+
+    /**
+     * gets the ID of the recipe that got favourite.
+     * @return
+     */
+    public Long getRecipeId() {
+        return recipeId;
+    }
+
+}

commons/src/main/java/commons/ws/messages/Message.java

@@ -23,6 +23,15 @@ public interface Message {
          */
         RECIPE_DELETE,
 
+        /**
+         * Message sent when a recipe became a favourite.
+         *
+         * @see commons.ws.messages.FavouriteRecipeMessage
+         */
+
+        RECIPE_FAVOURITE,
+
+
         /**
          * Message sent when a new ingredient is created.
          *