Change log to be a QMainWindow

Signed-off-by: Yihe Li <winmikedows@hotmail.com>

launcher/ui/ViewLogWindow.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <QMainWindow>
+
+#include "Application.h"
+
+class OtherLogsPage;
+
+class ViewLogWindow : public QMainWindow {
+    Q_OBJECT
+
+   public:
+    explicit ViewLogWindow(QWidget* parent = nullptr);
+
+   signals:
+    void isClosing();
+
+   protected:
+    void closeEvent(QCloseEvent*) override;
+
+   private:
+    OtherLogsPage* m_page;
+};