Core/Quests: Implemented QUEST_OBJECTIVE_FLAG_2_QUEST_BOUND_ITEM that makes required items not be stored in inventory

Port From (https://github.com/TrinityCore/TrinityCore/commit/4dce6ab228c54319032b346d2d791262eac3d9cd)

Source/Framework/Constants/QuestConst.cs

@@ -31,6 +31,7 @@ namespace Framework.Constants
         Max
     }
 
+    [Flags]
     public enum QuestObjectiveFlags
     {
         TrackedOnMinimap = 0x01, // Client Displays Large Yellow Blob On Minimap For Creature/Gameobject
@@ -45,6 +46,12 @@ namespace Framework.Constants
         IgnoreSoulboundItems = 0x0200,
     }
 
+    [Flags]
+    public enum QuestObjectiveFlags2
+    {
+        QuestBoundItem = 0x1   // Item is bound to a single objective, only increments the counter for one quest if multiple require the same item and is not stored in inventory
+    }
+
     public enum QuestCompleteSpellType
     {
         LegacyBehavior = 0,