Qt6 Migration: BUILD_RTI guards und CMake fixes

- BUILD_RTI conditional compilation für RTI Connext DDS dependencies
- Namespace fixes in core_dtc.h (Core:: → DDS::Core::)
- CMakeLists.txt: BUILD_RTI option und conditional dependencies
- Handler minelayer: namespace closing mit BUILD_RTI guard
- Build erfolgreich mit BUILD_RTI=OFF validiert

Signed-off-by: Torsten Wierschin <torsten.wierschin@life-maps.com>

qt6-after/qt6-migrated-legatus/Lts/Plugins/InfrastructureManagement/Gui/AudioVideoConfig/SetRecording/ism_set_recording_dialog_model.cpp

@@ -14,7 +14,7 @@ namespace InfrastructureManagement
 {
 
 SetRecordingDialogModel::SetRecordingDialogModel(QObject *parent) : NGLTreeModel(parent, new NGLTreeItem(QVariant()),,
-    m_logger(NGL::NGLLoggerBootstrap::getLogger()) { tr("Name") })
+    m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger()) { tr("Name") })
 , m_dtc(nullptr)
 {
 }