Qt6 Migration: Complete migration with DDS/RTI support and build validation

Major Changes:
- Merged latest Qt5 devel content from dlbo (292 files changed, 7 new dirs)
- Consolidated forward-declarations and include folders
- Removed unneeded modules per Niklas' repo check list

Build System Fixes:
- Fixed CMake VERSION_GREATER syntax in ParticipantManagement/CMakeLists.txt
- Added VLC packages (libvlc-dev, vlc-plugin-base) to docker_build.sh
- Added PostgreSQL dev packages (libpq-dev, postgresql-server-dev-all) to Dockerfile
- Fixed locale warnings (ANSI_X3.4-1968 → C.UTF-8)
- Fixed ArcGIS SDK path warnings when BUILD_ARCGIS=OFF

Code Generation Fixes:
- Fixed IDL enum collisions (PortType→CorePortType/DdsutPortType, PdmEventType)
- Fixed Grantlee template svc_translation.cpp.grantlee:
  - Changed {{ idl_enum.name }}_def:: to {{ idl_enum.name }}::
  - Fixed .underlying() calls for C++11 scoped enums (enum class)
- Removed generated files from repo (moc_*, *_dtc.h, *_ftc.h)

Validation:
- BUILD_RTI=ON: SUCCESS
- BUILD_RTI=OFF: SUCCESS
- C++17 standard maintained for RTI 7.7 compatibility
- Ubuntu 26.04 Docker environment verified

Remaining Warnings (expected):
- BgViewer, KDChart, KDReports, Poppler-Qt6 not found (optional features)

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

qt5-before/dlbo/Lts/Services/NotificationManagement/object_notification.h

@@ -0,0 +1,65 @@
+/**
+  * NomNotification object
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Hanna E. Rathje, ESZS, 2025-06-23
+  */
+
+#pragma once
+
+#include "dds_handler.h"
+//#include "nom_db.h"
+#include <DDS/Core/function_reply_object.h>
+
+// Generated
+#include <NotificationManagement/nom_db.h>
+
+namespace NotificationManagement
+{
+
+class ObjectNotification final
+{
+public:
+  explicit ObjectNotification(const std::shared_ptr<DdsHandler> &ddsHandler,
+                        const std::shared_ptr<DatabaseInterface> &db);
+
+  ~ObjectNotification();
+
+  Core::FunctionReplyObject createObject(const NomNotification &data);
+  Core::FunctionReplyObject readReceipt(const ReadReceipt &data, int notificationId);
+  Core::FunctionReplyObject deleteMessage(const DeleteMessage &data, int notificationId);
+  Core::FunctionReplyObject deleteObject(const DeleteMessage &data, int notificationId);
+  Core::FunctionReplyObject removeObject();
+
+  Core::FunctionReplyObject setUsed(bool isUsed);
+
+  qint32 id() const { return m_dataNotificationObject.id(); }
+  NomNotification notification() const { return m_dataNotificationObject; }
+  QString title() const { return QString::fromStdString(m_dataNotificationObject.title()); }
+
+  bool isValid() const;
+  bool isUsed() const;
+
+
+  // convert methods
+  Database::NomNotification toDbData(const NomNotification &ddsData);  // dds -> db
+  static NomNotification toDdsData(const Database::NomNotification &dbData);  // db -> dds
+
+  static Database::NomAddress toDbData(const Address &ddsData);  // dds -> db
+  static Address toDdsData(const Database::NomAddress &dbData);  // db -> dds
+
+private:
+  void onPublishData();
+  QString contentArgsToJson();
+  static std::vector<std::string> jsonToContentArgs(const QString &properties);
+
+private:
+  std::shared_ptr<DdsHandler>        m_ddsHandler;
+  std::shared_ptr<DatabaseInterface> m_db;
+  NomNotification                    m_dataNotificationObject;
+
+  NGL::INGLLogger    &m_logger;
+
+};
+} // namespace NotificationManagement