re-organize folder structure

include/mainwindow.h

@@ -0,0 +1,35 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include "socketclient.h"
+#include "gstreamerpipelinewidget.h"
+#include "cameracontrolwidget.h"
+#include "videoviewerwidget.h"
+#include "aboutwidget.h"
+
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class MainWindow;
+}
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+    ~MainWindow();
+
+private:
+    void setupUI();
+
+    Ui::MainWindow *ui;
+    SocketClient* m_socketClient;
+    GStreamerPipelineWidget* m_pipelineWidget;
+    CameraControlWidget* m_cameraWidget;
+    VideoViewerWidget* m_videoWidget;
+    AboutWidget* m_aboutWidget;
+};
+#endif // MAINWINDOW_H