added display of vpn containers and services on the settings page

- added PageSettingsData and implementation of 'remove all containers'  button

client/ui/models/containers_model.cpp

@@ -1,5 +1,7 @@
 #include "containers_model.h"
 
+#include "core/servercontroller.h"
+
 ContainersModel::ContainersModel(std::shared_ptr<Settings> settings, QObject *parent) : m_settings(settings), QAbstractListModel(parent)
 {
 }
@@ -106,6 +108,22 @@ int ContainersModel::getCurrentlyInstalledContainerIndex()
     return m_currentlyInstalledContainerIndex;
 }
 
+void ContainersModel::removeAllContainers()
+{
+
+    ServerController serverController(m_settings);
+    auto errorCode = serverController.removeAllContainers(m_settings->serverCredentials(m_currentlyProcessedServerIndex));
+
+    if (errorCode == ErrorCode::NoError) {
+    beginResetModel();
+        m_settings->setContainers(m_currentlyProcessedServerIndex, {});
+        m_settings->setDefaultContainer(m_currentlyProcessedServerIndex, DockerContainer::None);
+        endResetModel();
+    }
+
+    //todo process errors
+}
+
 QHash<int, QByteArray> ContainersModel::roleNames() const {
     QHash<int, QByteArray> roles;
     roles[NameRole] = "name";