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/skeleton/stub/object_xxx.cpp

@@ -0,0 +1,68 @@
+/**
+  * Handler for the HMI language
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "object_xxx_xxx.h"
+
+#include "dds_handler.h"
+#include "db_handler.h"
+#include "logger.h"
+
+namespace YyyYyyYyy
+{
+
+  ObjectXxx::ObjectXxx(const std::shared_ptr<DdsHandler> &ddsHandler,
+                       const std::shared_ptr<DbHandler> &dbHandler,
+                       QObject *parent)
+  : QObject(parent)
+  , m_ddsHandler(ddsHandler)
+  , m_dbHandler(dbHandler)
+  , m_logger(getLogger("ObjectXxx"))
+{
+}
+
+ObjectXxx::~ObjectXxx()
+{
+}
+
+Core::FunctionReplyObject ObjectXxx::createObject(const Database::YyyXxx &data)
+{
+  m_data = data;
+  if(m_data.id <= 0)
+    return Core::FunctionReplyObject(m_data.id, "It is not intended to insert data this way...");
+
+  // Publish Data via DTS
+  onPublishData();
+
+  return Core::FunctionReplyObject(m_data.id);
+}
+
+Core::FunctionReplyObject ObjectXxx::updateObject(const Database::YyyXxx &data)
+{
+  return Core::FunctionReplyObject(m_data.id, "You are not allowed to change this datum.");
+}
+
+Core::FunctionReplyObject ObjectXxx::removeObject()
+{
+  return Core::FunctionReplyObject(m_data.id, "Data removal denied.");
+}
+
+void ObjectXxx::onPublishData()
+{
+
+  YyyYyyYyy::Xxx ddsData;
+
+  ddsData.id(m_data.id);
+  // Todo: Copy as above
+  INFO_LOG(m_logger) << "Publish YyyXxx-data to dds (" << m_data.id << ") ...";
+
+  if (!m_ddsHandler->dts()->publish(ddsData))
+  {
+    ERROR_LOG(m_logger) << "Error publishing YyyXxx-data to dds";
+  }
+}
+
+} // Namespace YyyYyyYyy