Add a very basic menu system at the moment.

Add a menu programatically as I intend to make it auto populate from p[lugins later.
Add some simple icons to although this is subject to change later.

src/mainwindow.h

@@ -2,11 +2,15 @@
 #define MAINWINDOW_H
 
 #include <QMainWindow>
+#include <QtWidgets>
 
 QT_BEGIN_NAMESPACE
 namespace Ui {
 class MainWindow;
 }
+class QAction;
+class QLabel;
+class QMenu;
 QT_END_NAMESPACE
 
 class MainWindow : public QMainWindow
@@ -19,5 +23,17 @@ public:
 
 private:
     Ui::MainWindow *ui;
+    void createActions();
+    void createMenus();
+    QMenu *fileMenu;
+    QMenu *editMenu;
+    QMenu *helpMenu;
+    QAction *exitAct;
+    QAction *aboutAct;
+    QAction *aboutQtAct;
+
+private slots:
+    void about();
+
 };
 #endif // MAINWINDOW_H