Fix FileManagement Build-Fehler (BUILD_RTI=OFF)

- flm_db.h: Stub-Header mit Folder/FileContent Klassen erstellt
- flm_enums.hpp: MainFolder Enum hinzugefügt (None=0)
- flm_translation.h: toInt() entfernt, trFolderName() angepasst
- Plugin-Interfaces erstellt (flm, opm, exm)
- Viewer-Dialogs: QString-Konvertierungen behoben
- AdvancedSymbology CMakeLists.txt: Ungültige Pfade entfernt
- ism_mounting_point.cpp: Redundante Definitionen entfernt

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

qt6-after/qt6-migrated-legatus/include/OperatorManagement/opm_data_plugin_interface.h

@@ -0,0 +1,43 @@
+/**
+  * @RDE_HEADER@
+  * Data Plugin Interface for OperatorManagement (Interface for access from other Plugins)
+  */
+
+#pragma once
+
+#include <PluginInterfaces/data_plugin_interface.h>
+#include <OperatorManagement/opm_dtc.h>
+#include <OperatorManagement/opm_ftc.h>
+#include <memory>
+
+namespace OperatorManagement
+{
+class ForeignDataInterface;
+
+/**
+ * @brief The DataInterface class provides the Topics Clients only for the GUI Plugins
+ */
+class DataInterface : public DataPluginBase::Interface
+{
+public:
+  using DataPluginBase::Interface::Interface;
+
+  virtual std::shared_ptr<OperatorManagement::Interface::Dtc> getDtc() = 0;
+  virtual std::shared_ptr<OperatorManagement::Interface::Ftc> getFtc() = 0;
+  virtual std::shared_ptr<ForeignDataInterface> getForeignDataInterface() = 0;
+};
+
+/**
+ * @brief The ForeignInterface class provides methods and signals for foreign plugins, that need
+ * access to the data of this DataPlugin
+ */
+class ForeignDataInterface
+{
+public:
+  ForeignDataInterface() = default;
+  virtual ~ForeignDataInterface() = default;
+
+  virtual void onSendKeepAlive() = 0;
+};
+
+} // namespace OperatorManagement