feat: added 'clear site list' button (#1747) (#1753)

* feat: added 'clear site list' button (#1747)

* chore: rename 'Export/Import Sites' to 'Additional options'

---------

Co-authored-by: MrMirDan <58086007+MrMirDan@users.noreply.github.com>

client/ui/models/sites_model.cpp

@@ -83,6 +83,16 @@ void SitesModel::removeSite(QModelIndex index)
     endRemoveRows();
 }
 
+void SitesModel::removeSites()
+{
+    beginResetModel();
+
+    m_settings->removeAllVpnSites(m_currentRouteMode);
+    fillSites();
+
+    endResetModel();
+}
+
 int SitesModel::getRouteMode()
 {
     return m_currentRouteMode;

client/ui/models/sites_model.h

@@ -28,6 +28,7 @@ public slots:
     bool addSite(const QString &hostname, const QString &ip);
     void addSites(const QMap<QString, QString> &sites, bool replaceExisting);
     void removeSite(QModelIndex index);
+    void removeSites();
 
     int getRouteMode();
     void setRouteMode(int routeMode);