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/Viewer/SituationMap/MapImpl/tms_layer.h

@@ -0,0 +1,50 @@
+/**
+  * @RDE_HEADER@
+  * Tile Map Service Layer for Esri
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * License: BSD 2-Clause
+  */
+
+#pragma once
+
+#include <arcgis/TiledMapServiceLayer.h>
+#include <QNetworkReply>
+
+class QNetworkAccessManager;
+
+namespace EsriExtension
+{
+
+/** A small Wrapper around EsriRuntimeQt::TiledMapServiceLayer to
+ *  be able to access a tile map service through Qt Runtime SDK.
+ * Sadly Esri does not provide this layer for Qt...
+ * so we have to write one on our own
+ * It's far from perfect but works for our needs.
+ * It was only tested with geoserver 2.8 and EPSG:23632 projection
+ */
+class TMSLayer : public EsriRuntimeQt::TiledMapServiceLayer
+{
+  Q_OBJECT
+
+public:
+  explicit TMSLayer(const QString &url, QObject *parent = nullptr);
+  ~TMSLayer();
+
+  void initialize() override;
+private Q_SLOTS:
+  void replyBaseXmlFinished(QNetworkReply *reply);
+  void replyBaseXmlError(QNetworkReply::NetworkError);
+  void onRequestTMSTile(int level, int col, int row);
+private:
+  void cleanupNetworkReply(QNetworkReply *reply);
+private:
+  QMap<int, QString> m_tileUrls;
+  QMap<int, int> m_tilesYAxis;
+  QString m_extension;
+  QNetworkAccessManager *m_nam;
+
+};
+
+}