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/Proxies/WirelessLocationSystem/wls_handler.cpp

@@ -33,7 +33,7 @@ static inline QByteArray escapeData(const QByteArray &bufferData)
 }
 
 WlsHandler::WlsHandler(QObject *parent) : QObject(parent),
-    m_logger(NGL::NGLLoggerBootstrap::getLogger()) {
+    m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger()) {
   if (Settings::wlsMgrsBasePoint().size() <= 15)
     WARNING_LOG(m_logger) << "WLS basepoint is not defined precise enough: " << Settings::wlsMgrsBasePoint();
 }