BUILD_RTI=OFF: 1902/1902 Targets erfolgreich, DDS-Stubs vervollständigt

Neue Stub-Header für BUILD_RTI=OFF Konfiguration:
- include/DDS/Generic/generic_base.h: Topic-Name-Templates, Helper-Funktionen
- include/DDS/Generic/generic_logger.h: Logger-Wrapper mit DataType-Enum
- include/DDS/Generic/ddsgen_export.h: Export-Makros (leer für OFF)
- include/DDS/Generic/generic_data_reader.h: Data Reader Template-Stub
- include/DDS/DTC/generic_dtc.h: Minimale DDS-Typen für DTC
- include/LtsUtils/LtsUtilsCore/data_modification_enum.h: DataModification Enum
- include/FileManagement/flm_dtc_impl.h: Virtuelle Methoden für Name-Helper
- include/OperatorManagement/opm_dtc_impl.h: DtcImpl ohne Q_OBJECT

Wichtige Änderungen:
- QObject-Basisklasse entfernt für DatabaseInterfaceImpl und DtcImpl (BUILD_RTI=OFF)
- Logger-Stub verwendet Qt-Logging (qDebug/qWarning/qCritical)
- FileStatus als int-Alias statt enum class für BUILD_RTI=OFF
- CMake: DDS-Bibliotheken als leere INTERFACE-Targets für BUILD_RTI=OFF
- std::optional: is_set() → has_value(), get() → value()
- QList → std::vector Konversionen korrigiert
- qAsConst-Fehler mit rvalue expressions behoben

Build-Status: 1902/1902 Targets erfolgreich (BUILD_RTI=OFF)
Tests: Nicht ausführbar ohne RTI Connext DDS (BUILD_RTI=ON erforderlich)

qt6-after/qt6-migrated-legatus/include/DDS/Generic/generic_data_reader.h

@@ -0,0 +1,44 @@
+#pragma once
+
+/**
+ * @file generic_data_reader.h
+ * @brief Stub header for BUILD_RTI=OFF configuration
+ * 
+ * This file provides minimal stub definitions for DDS Generic Data Reader
+ * when RTI Connext DDS is not available (BUILD_RTI=OFF).
+ */
+
+#ifdef BUILD_RTI
+// RTI DDS is available - include the real implementation
+#include <Lts/DDS/Generic/generic_data_reader.h>
+#else
+// BUILD_RTI=OFF: Provide minimal stub definitions
+
+namespace dds {
+namespace sub {
+
+// Forward declaration stub for DataReader
+template<typename T>
+class DataReader {
+public:
+    // Minimal stub interface - add methods as needed by the codebase
+    T read() { return T{}; }
+    void take() {}
+};
+
+} // namespace sub
+} // namespace dds
+
+// GenericDataReader stub template
+template<typename T>
+class GenericDataReader {
+public:
+    using DataType = T;
+    
+    // Minimal stub methods - extend as needed
+    bool has_data() const { return false; }
+    T read_data() { return T{}; }
+    void cleanup() {}
+};
+
+#endif // BUILD_RTI