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/TrainingAreaBaseOC/canag_handler.cpp

@@ -17,7 +17,7 @@ TxDdlHandler::TxDdlHandler() : m_state(DdlState::NotStarted)
   , m_segmentToggle(0)
   , m_sentCnt(0)
   , m_responseTimer(new QTimer(this)),
-    m_logger(NGL::NGLLoggerBootstrap::getLogger()) {
+    m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger()) {
   m_responseTimer->setInterval(1000);
   m_responseTimer->setSingleShot(true);
   connect(m_responseTimer, &QTimer::timeout, this, &TxDdlHandler::sendAbortOrRestartTimeout);