Add option to reset window size to 1080p

src/yuzu/main.h

@@ -242,7 +242,8 @@ private slots:
     void ShowFullscreen();
     void HideFullscreen();
     void ToggleWindowMode();
-    void ResetWindowSize();
+    void ResetWindowSize720();
+    void ResetWindowSize1080();
     void OnCaptureScreenshot();
     void OnCoreError(Core::System::ResultStatus, std::string);
     void OnReinitializeKeys(ReinitializeKeyBehavior behavior);