feat(Core/Instance): Add instance validation for creature scripts (#4596)

src/server/scripts/EasternKingdoms/Deadmines/deadmines.h

@@ -5,6 +5,10 @@
 #ifndef DEF_DEADMINES_H
 #define DEF_DEADMINES_H
 
+#include "CreatureAIImpl.h"
+
+#define DeadminesScriptName "instance_deadmines"
+
 enum DataTypes
 {
     TYPE_RHAHK_ZOR              = 0,
@@ -18,4 +22,10 @@ enum GameObjects
     GO_IRON_CLAD_DOOR           = 16397
 };
 
+template <class AI, class T>
+inline AI* GetDeadminesAI(T* obj)
+{
+    return GetInstanceAI<AI>(obj, DeadminesScriptName);
+}
+
 #endif