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/CombatNetRadio/config_cnr.cpp

@@ -20,7 +20,7 @@ ConfigCnr::ConfigCnr(int exerciseId, AudioVideoManagement::Interface::Dtc *avmDt
   , m_avmDtc(avmDtc)
   , m_ismDtc(ismDtc)
   , m_loggerJson(getLogger("ConfigCnr.Json")),
-    m_logger(NGL::NGLLoggerBootstrap::getLogger()) {
+    m_logger(NGL::NGLLoggerBootstrap::getNGLRootLogger()) {
   Q_ASSERT(avmDtc);
   Q_ASSERT(ismDtc);