Grantlee Templates: Fix namespace resolution for RTI DTC generation

- Changed {{ namespace }}::{{ dt.type }} to ::{{ namespace }}::{{ dt.type }}
  in svc_dtc.h.grantlee, svc_dtc_impl.cpp.grantlee, svc_dtc_impl.h.grantlee
- Ensures absolute namespace resolution for Core::* types
- Fixes MOC/compilation errors for CurrentRunningState, LockedEntity, etc.

- Updated CMakeLists.txt for RTI 7.7.0 detection with DDS_PATH
- Fixed RTI include paths (ndds/hpp and ndds directories)
- Updated Lts/DDS module files for Qt6/RTI 7.7 compatibility

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Lts/DDS/Core/pacemaker.h

@@ -4,12 +4,18 @@
 
 #include "svccoreclient_export.h"
 
-#if BUILD_RTI
-#include <DDS/Core/core_dts_types.h>
-#endif
 #include <QtCore/QObject>
 #include <QtCore/QThread>
 
+// Forward declarations for moc compatibility (moc doesn't see BUILD_RTI guards)
+namespace Core { enum class RunningState; enum class PortType; }
+namespace DTS { class CurrentRunningStateImpl; }
+
+#if BUILD_RTI
+#include <dds/core/core_dts_types.h>
+#include <dds/core/types/CurrentRunningState.h>
+#endif
+
 namespace DDSConnector
 {
 class DdsConnector;
@@ -52,26 +58,24 @@ class CORE_CLIENT_EXPORT Pacemaker final : public QObject
 #endif
 
   private:
-    NGL::INGLLogger& m_logger;
 #if BUILD_RTI
+    NGL::INGLLogger& m_logger;
     void init(DDSConnector::DdsConnector* ddsConnector);
     void setNewStateInternal(Core::RunningState newState, const QString& errorString = QString());
     void addPortInternal(unsigned short number, Core::PortType portType,
                          const QString& properties = QStringLiteral(""));
-#endif
 
-  private:
-    NGL::INGLLogger& m_logger;
-    static constexpr const int m_publishTimerDelay = 3000;
-
-#if BUILD_RTI
     CurrentRunningState m_state;
+    DTS::CurrentRunningStateImpl* m_dtsCurrentRunningState = nullptr;
+#else
+    void* m_reserved1 = nullptr;
+    void* m_reserved2 = nullptr;
+    void* m_reserved3 = nullptr;
+    void* m_reserved4 = nullptr;
+    void* m_reserved5 = nullptr;
 #endif
+    static constexpr const int m_publishTimerDelay = 3000;
     QTimer* m_publishTimer = nullptr;
     QThread* m_paceThread = nullptr;
-
-#if BUILD_RTI
-    DTS::CurrentRunningStateImpl* m_dtsCurrentRunningState;
-#endif
 };
 } // namespace Core