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/Common/CodeGen/svc_dts_impl.cpp.grantlee

@@ -0,0 +1,100 @@
+/**
+  * {{ namespace_abbr_upper }} Data Topic Server Interface
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Ehrlicher, SLSE, 2016-04-07
+  */
+
+{% autoescape off %}
+// filename: {{ namespace_abbr }}_dts_impl.cpp
+#include "{{ namespace_abbr }}_dts_impl.h"
+#include <DDS/DTS/generic_dts_impl.h>
+
+namespace {{ namespace }}
+{
+namespace Interface
+{
+// initializer function
+std::shared_ptr<Dts> Dts::create(const std::shared_ptr<DDSConnector::DdsConnector> &ddsConnector)
+{
+  return std::make_shared<DtsImpl>(ddsConnector);
+}
+
+// DtsImpl
+DtsImpl::DtsImpl(const std::shared_ptr<DDSConnector::DdsConnector> &ddsConnector)
+  : Dts()
+  , m_ddsConnector(ddsConnector)
+  , m_logger(getLogger("Dts"))
+{}
+
+DtsImpl::~DtsImpl()
+{
+  enableAll(false);
+}
+
+bool DtsImpl::enableAll(bool enable)
+{
+  {% for dt in dataTopics.member %} {% if dt.dtsImpl %}
+  if (!enable{{ dt.name }}(enable))
+  {
+    WARNING_LOG(m_logger) << "Error initializing data topic {{ dt.name }}";
+    return false;
+  }
+  {% endif %} {% endfor %}
+  return true;
+}
+
+{% for dt in dataTopics.member %} {% if dt.dtsImpl %}
+//
+// Data Topic '{{ dt.name }}'
+//
+bool DtsImpl::enable{{ dt.name }}(bool enable)
+{
+  if (enable)
+  {
+    if (m_dts{{ dt.name }})
+    {
+      INFO_LOG(m_logger) << "{{ ft.name }} already enabled!";
+      return true;
+    }
+    m_dts{{ dt.name }}.reset(m_ddsConnector->createDTS<DTS::{{ dt.name }}Impl>());
+    assert(m_dts{{ dt.name }}.get());
+  }
+  else
+  {
+    m_dts{{ dt.name }} = nullptr;
+  }
+  return true;
+}
+
+bool DtsImpl::publish(const {{ namespace }}::{{ dt.type }} &data)
+{
+  if (!m_dts{{ dt.name }})
+  {
+    WARNING_LOG(m_logger) << "Error publishing data topic {{ dt.name }} - not enabled";
+    Q_ASSERT(false);
+    return false;
+  }
+  return m_dts{{ dt.name }}->write(data);
+}
+
+{% if dt.key.name %}
+bool DtsImpl::remove{{ dt.name }}ByKey({{ dt.key.cppTypeCr }} {{ dt.key.nameFlc }}, bool errorMsgIfSampleDoesNotExists)
+{
+  if (!m_dts{{ dt.name }})
+  {
+    WARNING_LOG(m_logger) << "Error removing data topic {{ dt.name }} - not enabled";
+    Q_ASSERT(false);
+    return false;
+  }
+  {{ namespace }}::{{ dt.name }} data;
+  data.{{ dt.key.name }}({{ dt.key.name }});
+  return m_dts{{ dt.name }}->remove(data, errorMsgIfSampleDoesNotExists);
+}
+{% endif %}
+{% endif %} {% endfor %}
+
+} // namespace Interface
+} // namespace {{ namespace }}
+{% endautoescape %}