Core/Scripts: log ScriptNames assigned in database without core script

(cherry picked from commit cc4ebdbe059358cac997e783b2fddc6cff4c831b)

src/server/game/Scripting/ScriptMgr.h

@@ -873,6 +873,15 @@ class GroupScript : public ScriptObject
 // Placed here due to ScriptRegistry::AddScript dependency.
 #define sScriptMgr ScriptMgr::instance()
 
+// namespace
+// {
+    typedef std::vector<ScriptObject*> UnusedScriptContainer;
+    typedef std::list<std::string> UnusedScriptNamesContainer;
+
+    extern UnusedScriptContainer UnusedScripts;
+    extern UnusedScriptNamesContainer UnusedScriptNames;
+// }
+
 // Manages registration, loading, and execution of scripts.
 class ScriptMgr
 {
@@ -901,6 +910,7 @@ class ScriptMgr
     public: /* Unloading */
 
         void Unload();
+        void UnloadUnusedScripts();
 
     public: /* SpellScriptLoader */