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/GeometryModel/geometry_pixelTextBox.h

@@ -0,0 +1,69 @@
+/**
+  * @RDE_HEADER@
+  * PixelTextBoxData as Addon to GeometryModel
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Norbert Thoden, SLSE, 2023-04-27
+  */
+
+#pragma once
+
+#include <QString>
+#include <QColor>
+#include <QPoint>
+#include <QSize>
+#include <QJsonObject>
+#include <QJsonDocument>
+
+#include "geometry_model_export.h"
+
+namespace SituationMap
+{
+
+class GEOMETRYMODEL_EXPORT PixelTextBoxData
+{
+public:
+  PixelTextBoxData() = default;
+  explicit PixelTextBoxData(const QString &htmlText, const QColor &backgroundColor);
+
+  void reset();
+  bool isEmpty() const;
+
+  QString toDebugString() const;
+
+  QString m_htmlText;
+  QColor  m_backgroundColor;
+  QPoint  m_position;
+  QSize   m_size;
+
+  // operator
+  bool operator==(const PixelTextBoxData &o) const;
+
+
+  // Json:
+  QJsonObject toJson() const;
+  static PixelTextBoxData fromJson(const QJsonValue &json);
+
+  QString toJsonStr(QJsonDocument::JsonFormat format = QJsonDocument::JsonFormat::Indented) const;
+  static PixelTextBoxData fromJsonStr(const QString &jsonStr);
+
+  static QJsonObject pixelTextBoxContainerToJson(const QVector<PixelTextBoxData> &ptbdCont);
+  static QVector<PixelTextBoxData> pixelTextBoxContainerFromJson(const QJsonValue &json);
+
+  static QString pixelTextBoxContainerToJsonStr(const QVector<PixelTextBoxData> &ptbdCont, QJsonDocument::JsonFormat format = QJsonDocument::JsonFormat::Indented);
+  static QVector<PixelTextBoxData> pixelTextBoxContainerFromJsonStr(const QString &jsonStr);
+
+};
+
+//-----------------------------------------------------------------------------
+// output operator:
+//-----------------------------------------------------------------------------
+GEOMETRYMODEL_EXPORT std::ostream &operator<< (std::ostream   &stream,
+                                               const PixelTextBoxData &value);
+
+
+
+
+
+} // namespace SituationMap