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/Services/EffectShowManagement/effect_show_effect_cluster.cpp

@@ -18,7 +18,7 @@ EffectShowEffectCluster::EffectShowEffectCluster(const AreaEffectSimulation::Eff
                                                        const std::shared_ptr<HandlerPdmData>     &handlerPdmData) : m_effectCluster(effectCluster)
   , m_handlerPdmData(handlerPdmData)
   , m_numOfEffectShows(0),
-    m_logger(NGL::NGLLoggerBootstrap::getLogger()) {
+    m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger()) {
 }
 
 //=============================================================================