feat: add opengl widget

src/gui/viewport/Viewport.h

@@ -1,8 +1,15 @@
 #pragma once
+#include <qboxlayout.h>
 #include <qwidget.h>
+#include "gui/viewport/OpenGLWidget.h"
 
 class Viewport
 : public QWidget
 {
+public:
+    Viewport(QWidget *parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
+private:
+    QVBoxLayout* mainLayout_;
+    MyGLWidget* openGLWidget_;
 
 };