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/TetraIF/LogView/LogViewXdrStruct.hpp

@@ -0,0 +1,65 @@
+// **************************************************************************
+//
+//  (C) Copyright 2009   Swiss SIMTEC AG
+//
+// **************************************************************************
+//
+//  $HeadURL$
+//  $LastChangedBy$
+//  $LastChangedDate$
+//  $LastChangedRevision$
+//
+// **************************************************************************
+ 
+#pragma once
+
+#include <QtCore/QString>
+#include "LogViewXdrElement.hpp"
+#include <vector>
+
+// forward declarations from stereotyped includes
+namespace N_LogView
+{
+  class LogViewXdrValue;
+}
+namespace N_LogView
+{
+  class LogViewXdrType;
+}
+
+namespace N_LogView
+{
+  /**
+   * This class represents elements which have childs.
+   * This are enum and struct.
+   * @author alois.wismer
+   * @version 1.0
+   * @created 31-Mrz-2010 11:59:19
+   */
+  class LogViewXdrStruct final : public LogViewXdrElement
+  {
+  public:
+    LogViewXdrStruct(const QString& a_name, const LogViewXdrElement::E_ElementKind a_kind, uint16_t enumSize = 0);
+    ~LogViewXdrStruct();
+
+    void addElement(const QString& a_name, const QString& a_type, const uint16_t a_arraySize, const uint16_t a_dynArrayOffset, const E_ElementKind a_kind, const int16_t a_firstBit = -1, const int16_t a_lastBit = -1, const bool a_isLast = true);
+    void addElement(const QString& a_name, const uint32_t a_value, const E_ElementKind a_kind);
+
+    LogViewXdrElement* getChild(const uint32_t a_childIndex) const;
+    LogViewXdrType* getChildAsType(const uint32_t a_childIndex) const;
+    LogViewXdrValue* getChildAsValue(const uint32_t a_childIndex) const;
+
+
+    void dump() const override;
+
+    uint32_t getChildValue(const QString& a_name, bool* a_error = nullptr) const;
+    uint16_t getEnumSize() const { return m_EnumSize; }
+
+  protected:
+
+    uint16_t m_EnumSize;
+    std::vector<LogViewXdrElement*> m_ChildList;
+
+  };
+
+}