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/AssetManagement/handler_location.cpp

@@ -0,0 +1,58 @@
+/**
+  * Handler for all asset locations
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Iuliana Ojog, SLSE, 2017-09-20
+  */
+
+#include "handler_location.h"
+#include "main_handler.h"
+
+namespace AssetManagement
+{
+
+// -------------------------------------------------------------------------------------------------------
+// Database::AsmLocation => AssetManagement::Location
+static inline Location toDdsData(const Database::AsmLocation &dbData)
+{
+  Location ddsData;
+
+  ddsData.id(dbData.id);
+  ddsData.name(dbData.name.toStdString());
+  ddsData.description(dbData.description.toStdString());
+
+  // init data not in db
+  ddsData.isDeleted(false);
+  ddsData.isUsed(false);
+
+  return ddsData;
+}
+
+HandlerLocation::HandlerLocation(MainHandler *mainHandler)
+  : m_mainHandler(mainHandler)
+  , m_logger(getLogger("HandlerLocation"))
+{
+}
+
+bool HandlerLocation::init()
+{
+  int iCnt = 0;
+  // create objects
+  auto cb = [this, &iCnt] (const Database::AsmLocation &data)
+  {
+    m_mainHandler->dds()->dts()->publish(toDdsData(data));
+    ++iCnt;
+  };
+  if (!m_mainHandler->db()->select(cb))
+  {
+    ERROR_LOG(m_logger) << "Error reading data from database!";
+    return false;
+  }
+
+  DEBUG_LOG(m_logger) << "#Locations published: " << iCnt;
+
+  return true;
+}
+
+} // Namespace AssetManagement