show userstyles status on the bottom of the page

src/centralwidget.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <QLabel>
+#include <QVBoxLayout>
+#include <QWebEnginePage>
+#include <QWebEngineProfile>
+#include <QWebEngineView>
+#include <QWidget>
+
+class CentralWidget : public QWidget {
+  Q_OBJECT
+
+public:
+  CentralWidget(QWidget *parent = nullptr);
+
+private:
+  void setupWebView();
+  QVBoxLayout *m_layout;
+  QWebEngineView *m_webView;
+#ifdef KNOTIFICATIONS
+  bool m_useKF5Notifications = true;
+#else
+  bool m_useKF5Notifications = false;
+#endif
+  QLabel *m_loadingLabel = nullptr;
+
+public Q_SLOTS:
+  void setLoadingIndicator(QString text);
+};