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/DDS/FTS/connext.h

@@ -2,6 +2,8 @@
 
 #pragma once
 
+#if BUILD_RTI
+
 #include <NGLLogger/NGLLoggerBootstrap.h>
 #include <dds/core/cond/GuardCondition.hpp>
 #include <dds/core/cond/StatusCondition.hpp>
@@ -280,7 +282,7 @@ template <typename REQUEST, typename REPLY> class Requester final : public Reply
     , m_dataReader(nullptr)
     , m_contentFilteredTopic(nullptr)
     , m_curInstanceHandle(dds::core::InstanceHandle::nil())
-    .getNGLLogger("connext.requester"))
+    , m_logger(NGL::getNGLLogger("connext.requester"))
   {
   }
 
@@ -429,7 +431,7 @@ template <typename REQUEST, typename REPLY> class Replier final : public ReplyRe
     , m_dataReader(dds::sub::DataReader<REQUEST>(replierParams.subscriber(),
                                                  ReplyRequestBase<REQUEST, REPLY>::m_requestTopic,
                                                  replierParams.datareader_qos()))
-    .getNGLLogger("connext.replier"))
+    , m_logger(NGL::getNGLLogger("connext.replier"))
   {
   }
 
@@ -501,3 +503,5 @@ private:
 };
 
 } // namespace connext
+
+#endif // BUILD_RTI