add QTVulkan example

example/Vulkan/QtVulkanMainWindow.h

@@ -0,0 +1,24 @@
+#pragma once
+#include<QWidget>
+#include<QPlainTextEdit>
+#include<QVBoxLayout>
+#include"QtVulkanWindow.h"
+
+class MainWindow:public QWidget
+{
+    Q_OBJECT
+
+private:
+
+    QtVulkanWindow *m_window;
+    QPlainTextEdit *m_info;
+
+public slots:
+
+    void onVulkanInfoReceived(const QString &text);
+
+public:
+
+    MainWindow(QtVulkanWindow *w);
+    virtual ~MainWindow()=default;
+};//