feat: add opengl widget

src/gui/viewport/Viewport.cpp

@@ -0,0 +1,14 @@
+#include "gui/viewport/Viewport.h"
+#include <qboxlayout.h>
+#include <qpushbutton.h>
+
+Viewport::Viewport(QWidget *parent, Qt::WindowFlags f)
+: QWidget(parent, f)
+{
+    mainLayout_=new QVBoxLayout();
+    openGLWidget_ = new MyGLWidget(this);
+    mainLayout_->addWidget(openGLWidget_);
+
+    setLayout(mainLayout_);
+}
+