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/DDS/FTS/generic_fts_internal.cpp

@@ -0,0 +1,53 @@
+/**
+  * @RDE_HEADER@
+  * Generic Function Topic Server (FTS Replier)
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "generic_fts_internal.h"
+#include <DDS/QosProfile/DDS_DefaultQos.h>
+#include <QMetaMethod>
+#include <NGLLogger/INGLLogger.h>
+#include <qglobal.h>
+
+namespace FTS
+{
+
+void GenericFtsInternal::printDefaultQos(NGL::INGLLogger &logger)
+{
+  if (logger.isDebugEnabled())
+    DDS::QosProfile::print(dds::core::QosProvider::Default(), logger);
+}
+
+dds::sub::qos::DataReaderQos GenericFtsInternal::readerQos(NGL::INGLLogger &logger)
+{
+  dds::sub::qos::DataReaderQos qos = DDS::QosProfile::dataReaderDefault(DDS::QosProfile::TopicType::FunctionTopic);
+  if (logger.isDebugEnabled())
+    DDS::QosProfile::print(qos, logger);
+  return qos;
+}
+
+dds::pub::qos::DataWriterQos GenericFtsInternal::writerQos(NGL::INGLLogger &logger)
+{
+  dds::pub::qos::DataWriterQos qos = DDS::QosProfile::dataWriterDefault(DDS::QosProfile::TopicType::FunctionTopic);
+  if (logger.isDebugEnabled())
+    DDS::QosProfile::print(qos, logger);
+  return qos;
+}
+
+void GenericFtsInternal::dataAvailable()
+{
+  if (!enqueueRequests())
+    return;
+#if QT_VERSION < QT_VERSION_CHECK(5,10,0)
+  if (!QMetaObject::invokeMethod(this, "processRequests", Qt::QueuedConnection))
+    abort();
+#else
+  QMetaObject::invokeMethod(this, &GenericFtsInternal::processRequests, Qt::QueuedConnection);
+#endif
+}
+
+
+} // namespace FTS