Merge pull request #12878 from LillyJadeKatrin/retroachievements-hardcore-state-changed

Decouple Hardcore from EmulationStateChanged

Source/Core/DolphinQt/Settings.h

@@ -223,6 +223,7 @@ signals:
   void SDCardInsertionChanged(bool inserted);
   void USBKeyboardConnectionChanged(bool connected);
   void EnableGfxModsChanged(bool enabled);
+  void HardcoreStateChanged();
 
 private:
   Settings();