Core/Instances: Delete InstanceSaveMgr and replace most of its uses with new InstanceLockMgr

Port From (https://github.com/TrinityCore/TrinityCore/commit/9b924522d0549dd67b10e2cbdfc20297dd21e182)

Source/Game/Scripting/CoreScripts.cs

@@ -681,7 +681,7 @@ namespace Game.Scripting
         public virtual void OnSave(Player player) { }
 
         // Called when a player is bound to an instance
-        public virtual void OnBindToInstance(Player player, Difficulty difficulty, uint mapId, bool permanent, BindExtensionState extendState) { }
+        public virtual void OnBindToInstance(Player player, Difficulty difficulty, uint mapId, bool permanent, byte extendState) { }
 
         // Called when a player switches to a new zone
         public virtual void OnUpdateZone(Player player, uint newZone, uint newArea) { }

Source/Game/Scripting/ScriptManager.cs

@@ -963,7 +963,7 @@ namespace Game.Scripting
         {
             ForEach<PlayerScript>(p => p.OnSave(player));
         }
-        public void OnPlayerBindToInstance(Player player, Difficulty difficulty, uint mapid, bool permanent, BindExtensionState extendState)
+        public void OnPlayerBindToInstance(Player player, Difficulty difficulty, uint mapid, bool permanent, byte extendState)
         {
             ForEach<PlayerScript>(p => p.OnBindToInstance(player, difficulty, mapid, permanent, extendState));
         }