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/MapObjects/mine_field.h

@@ -0,0 +1,90 @@
+/**
+  * @RDE_HEADER@
+  * Interface of MineField
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+#include "abstract_multi_point_map_object.h"
+#include <Map/abstract_effect_simulation.h>
+
+//----------------------------------------------------------------------------
+namespace SituationMap
+{
+
+/**
+ * @brief The MineField class supports MineFields with Activated and DeActivated mines.
+ */
+class MineField : public virtual AbstractMultiPointMapObject, public virtual AbstractEffectSimulation
+{
+
+  using BaseClass = AbstractMapObject;
+
+public:
+  enum class MineState
+  {
+    Activated,          ///< live, aimed
+    DeActivated         ///<
+  };
+
+public:
+
+  /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+   * Don't use "= default" because of bug in VS2015 JT 2016/11/7
+   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+  MineField() : AbstractMultiPointMapObject(), AbstractEffectSimulation() { ; }
+  virtual ~MineField() = default;  ///< Destructor
+
+
+  /*! \name Segments */
+  //@{
+  virtual PositionCont segment(int key) const = 0;
+  /**
+   * @brief Set positions of one segment.
+   * @param key of segment to be set.
+   * @param posCont positions of segment.
+   * @note: is key is negativ, no fill pattern is aplied.
+   * If key is >=0, the pattern of the segments take over the main pattern.
+   */
+  virtual void            setSegment(int key, const PositionCont &posCont) = 0;
+
+  /**
+   * @brief Remove one segment
+   * @param key to be removed.
+   */
+  virtual void removeSegment(int key) = 0;
+
+  /**
+   * @brief Remove all segments.
+   */
+  virtual void removeSegments() = 0;
+
+  /**
+   * @brief Get a list of keys in use.
+   * @return List of keys in use.
+   */
+  virtual QList<int> keysInUse() const = 0;
+
+
+  /*! \name Positions of Mines */
+  //@{
+  /**
+   * @brief Set all positions of mines (of all states)
+   * @param mineState to be set.
+   * @param posCont positions of mines to be set.
+   */
+  virtual void setPositionsMine(MineState mineState, const PositionCont &posCont) = 0;
+  //@}
+
+  virtual bool mineVisibility(MineState mineState) const = 0;
+  virtual void setMineVisibility(MineState mineState, bool visible) = 0;
+
+};
+
+
+
+
+} // namespace SituationMap