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/Application/THP/SitMapReplayTest/srp_main.cpp

@@ -0,0 +1,64 @@
+/**
+  * @RDE_HEADER@
+  * Main for SitMapReplayTest
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Ehrlicher, SLSE, 2016-02-29
+  */
+
+#include <nglapplication/nglapplication.h>
+#include <DDS/DDSConnector/dds_connector.h>
+#include <DDS/QosProfile/DDS_DefaultQos.h>
+#include <QNetworkProxy>
+#include <SituationReplay/main_handler_sqlite.h>
+#include <SituationMap/situation_map_init.h>
+#include <SituationMap/Utils/movement_track_manager.h>
+#include "../thp_plugin_provider.h"
+#include "srp_main_window.h"
+#include "ui_srp_main_window.h"
+
+int main(int argc, char **argv)
+{
+  QNetworkProxy::setApplicationProxy(QNetworkProxy());
+  NGLApplication app(argc, argv);
+  app.createLogger("SRP");
+  app.setAttribute(Qt::AA_UseHighDpiPixmaps);
+
+  SituationReplay::ConnectionParams connParams;
+  connParams.domainId = 1;
+  connParams.partitionId = 1;
+  std::shared_ptr<SituationReplay::MainHandlerSqlite> srpMainHandler(new SituationReplay::MainHandlerSqlite);
+  if (!srpMainHandler->initDds(connParams))
+    return 1;
+  // TODO: fixme or trash me
+  SituationReplay::ReplayInformation ri;
+  ri.databaseFilePath = QStringLiteral("dump.sqlite");
+  ri.replayConfigPath = QStringLiteral("dump.json");
+  if (!srpMainHandler->initDb(ri, {}, {}))
+    return 2;
+
+  std::shared_ptr<DDSConnector::DdsConnector> ddsConn = srpMainHandler->ddsReplay();
+  THP::SitMapPluginProvider *pp = new THP::SitMapPluginProvider;
+  pp->init(ddsConn);
+
+  SituationMap::SituationMapInit *smi = new SituationMap::SituationMapInit(nullptr);
+  smi->initPluginProvider(pp);
+
+  QPointer<SituationMap::MovementTrackManager> movementTrackMgr =
+      QPointer<SituationMap::MovementTrackManager>(new SituationMap::MovementTrackManager(smi));
+
+  smi->initAdapter(movementTrackMgr, false);
+  smi->initMap(true, SituationMap::Mode::Mode_2D);
+
+  SituationReplay::MainWindow *mw = new SituationReplay::MainWindow(smi, srpMainHandler->handlerSrp());
+  mw->show();
+
+  int ret = app.exec();
+
+  delete mw;
+  delete smi;
+  delete pp;
+  ddsConn.reset();
+  return ret;
+}