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/FileManagement/ModuleTests/flm_tests.h

@@ -0,0 +1,111 @@
+/**
+  * @RDE_HEADER@
+  * ISM Function Topic test executable
+  * $Id$
+  * @RDE_HEADER@
+  * Module Tests for FLM
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Iuliana Ojog, SLSE, 2017-04-05
+  */
+
+#pragma once
+
+#include <FileManagement/flm_ftc.h>
+#include <FileManagement/flm_dtc.h>
+#include <FileManagement/flm_db.h>
+#include <FileManagement/flm_db_impl_custom.h>
+#include <FileManagement/flm_ftc_types.h>
+
+#include <DDS/DDSConnector/dds_connector.h>
+
+#include <FileManagement/logger.h>
+#include <QPixmap>
+#include <ngldb/db_service_handler.h>
+
+namespace FileManagement
+{
+using DbHandler = NGLDB::DbServiceHandler<DatabaseInterface>;
+class FlmTests : public QObject
+  , protected FileManagement::Interface::Ftc::FolderModifyReplyHandler
+  , protected FileManagement::Interface::Ftc::FolderRemoveReplyHandler
+  , protected FileManagement::Interface::Ftc::FileContentModifyReplyHandler
+  , protected FileManagement::Interface::Ftc::FileContentRemoveReplyHandler
+  , protected FileManagement::Interface::Ftc::FileContentExportReplyHandler
+  , protected FileManagement::Interface::Ftc::GetFileContentDataReplyHandler
+{
+  Q_OBJECT
+public:
+  explicit FlmTests(QObject *parent = nullptr);
+  ~FlmTests();
+
+  bool init(int domainId, int testId, int folderId, int fileContentId, int operatorId);
+  bool testsSuccessful() const { return m_bTestsSuccessful; }
+
+public Q_SLOTS:
+  void startTest();
+protected Q_SLOTS:
+// folder
+  void tryCreateFolder();
+  void tryModifyFolder();
+  void tryRemoveFolder();
+  int createFolder(int parentFolderId, const QString &folderName, bool isHidden = false);
+
+// file content
+  void tryCreateFileContent();
+  void tryModifyFileContent();
+  void tryRemoveFileContent();
+  void tryExportFileContent();
+  void tryGetContent();
+  void tryUpdateStatus();
+
+// plans etc.
+  void tryCreatePlan();
+  void tryCreateFav();
+  void tryCreateSymbol();
+
+// custom dtc's
+  void tryGetAllTemplates();
+  void tryGetAllPlans();
+  void tryGetAllFavs();
+  void tryGetAllSymbols();
+
+protected:
+// folder
+  void onFolderModifyReply(const Core::FunctionReplyObject &replyObject) override final;
+  void onFolderRemoveReply(const Core::FunctionReplyObject &replyObject) override final { onReply(replyObject); }
+
+// file content
+  void onFileContentModifyReply(const Core::FunctionReplyObject &replyObject) override final;
+  void onFileContentRemoveReply(const Core::FunctionReplyObject &replyObject) override final { onReply(replyObject); }
+  void onFileContentExportReply(const Core::FunctionReplyObject &replyObject) override final { onReply(replyObject); }
+  void onGetFileContentDataReply(const GetFileContentDataReply &replyObject) override final;
+
+// general
+  void onError(const QString &reason);
+  void onReply(const Core::FunctionReplyObject &replyObject);
+  void failExit();
+  bool checkContentSize(int fileId);
+
+private:
+  std::shared_ptr<DDSConnector::DdsConnector>        m_ddsConnector;
+  std::shared_ptr<FileManagement::Interface::Ftc>    m_ftc;
+  std::shared_ptr<FileManagement::Interface::Dtc>    m_dtc;
+  std::shared_ptr<FileManagement::DatabaseInterface> m_db;
+  std::shared_ptr<FileManagement::DbHandler>         m_dbHandler;
+
+  std::vector<uint8_t> m_content;
+
+// given
+  int              m_testId;
+  int              m_folderId;
+  int              m_fileContentId;
+  int              m_operatorId;
+  bool             m_bTestsSuccessful;
+
+  LOGGER_T         m_logger;
+
+};
+
+} // namespace FileManagement