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/generic_fts_internal.h

@@ -2,9 +2,13 @@
 
 #pragma once
 
-#include "generic_fts.h"
 #include <ddsfts_export.h>
+#include "logger.h"
+
+#if BUILD_RTI
+#include <DDS/Core/topic_lock_master.h>
 #include <DDS/Generic/wait_set_handler.h>
+#endif
 #include <dds/sub/qos/DataReaderQos.hpp>
 #include <dds/pub/qos/DataWriterQos.hpp>
 
@@ -13,7 +17,9 @@
 namespace FTS
 {
   class DDSFTS_EXPORT GenericFtsInternal : public QObject
+#if BUILD_RTI
       , protected DDSGeneric::WaitSetHandler::CallbackInterface
+#endif
   {
     Q_OBJECT
   protected:
@@ -24,8 +30,9 @@ namespace FTS
     static dds::pub::qos::DataWriterQos writerQos(NGL::INGLLogger &logger);
 
   protected:
-    
+#if BUILD_RTI
     void dataAvailable() override;
+#endif
     virtual bool enqueueRequests() = 0; 
   protected Q_SLOTS:
     virtual void processRequests() = 0;