Add OpenGL 3.0 Core renderer

src/qt/qt_mainwindow.hpp

@@ -99,6 +99,8 @@ private slots:
 
     void on_actionSound_gain_triggered();
 
+    void on_actionOpenGL_3_0_Core_triggered();
+
 protected:
     void keyPressEvent(QKeyEvent* event) override;
     void keyReleaseEvent(QKeyEvent* event) override;