Handle GM bird monsters and dragons

This ensures bird monsters can be safely swapped out with other enemies in Kingdom and Vegas, and still provide a way to end the level.
Some initial dragon spawn rooms have been allocated,.

Author: lahm86

TRDataControl/Environment/Model/Types/Entities/EMAddEntityFunction.cs

@@ -41,7 +41,8 @@ public override void ApplyToLevel(TR1Level level)
 
     public override void ApplyToLevel(TR2Level level)
     {
-        if (level.Entities.Count < _defaultEntityLimit)
+        int limit = _isCommunityPatch ? 10240 : _defaultEntityLimit;
+        if (level.Entities.Count < limit)
         {
             EMLevelData data = GetData(level);
             if (TargetRelocation != null)

TRDataControl/Transport/TR2/TR2MassExporter.cs

@@ -29,7 +29,7 @@ protected override TR2Level ReadLevel(string path)
         },
         [TR2LevelNames.BARTOLI] = new()
         {
-            TR2Type.StickWieldingGoon1WhiteVest, TR2Type.Key1_M_H, TR2Type.LargeMed_M_H, TR2Type.SmallMed_M_H
+            TR2Type.StickWieldingGoon1WhiteVest, TR2Type.Key1_M_H, TR2Type.Keyhole1, TR2Type.LargeMed_M_H, TR2Type.SmallMed_M_H,
         },
         [TR2LevelNames.OPERA] = new()
         {