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/ttci_device.cpp

@@ -17,7 +17,7 @@ Device::Device(QObject *parent, bool tcpMode) : QObject(parent)
   , m_receiveTimeoutTimer(new QTimer(this))
   , m_tcpMode(tcpMode)
   .getNGLLogger("TTCI.Device")),
-    m_logger(NGL::NGLLoggerBootstrap::getLogger()) {
+    m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger()) {
   connect(m_spQuerry, &LtsSerialPortQuerry::LtsSerialPortQuerry::connectionEstablished, this, &Device::open);
   m_spQuerry->restartQuerry();