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/LogViewDateTimeEdit.cpp

@@ -0,0 +1,86 @@
+// **************************************************************************
+// 
+//  (C) Copyright 2009   Swiss SIMTEC AG
+// 
+// **************************************************************************
+// 
+//  $HeadURL$
+//  $LastChangedBy$
+//  $LastChangedDate$
+//  $LastChangedRevision$
+//   
+// **************************************************************************
+ 
+// manual class headers
+#include "LogViewDateTimeEdit.hpp"
+#include <time.h>
+#include "LogViewField.hpp"
+#include "LogViewTelegram.hpp"
+
+namespace N_LogView
+{
+
+// ---------------------------------------------------------------
+LogViewDateTimeEdit::LogViewDateTimeEdit(LogViewField* a_field, QWidget* a_parent, const bool a_readonly)
+  : QDateTimeEdit(a_parent)
+  , LogViewWidget(a_field, this, a_parent, a_readonly)
+{
+  if (a_readonly)
+  {
+    setReadOnly(true);
+    setAlignment(a_field->isRightAligned() ? Qt::AlignRight : Qt::AlignLeft);
+  }
+
+  // date-time-field
+  qint64 unixTime = 0;
+  if (a_field->hasContent())
+  {
+    if (a_field->isMSecsField())
+      unixTime = a_field->value(0, true).toLongLong();
+    else
+      unixTime = a_field->value(0, true).toInt() * 1000LL;
+  }
+  // take actual date and time if time is 0
+  if (0 == unixTime && !a_readonly)
+    unixTime = ::time(nullptr) * 1000LL;
+
+  //valueWidget = new QDateTimeEdit(dateTime);
+  setDateTime(QDateTime::fromMSecsSinceEpoch(unixTime));
+  setDisplayFormat(QLatin1String("dd MMM yyyy hh:mm:ss"));
+  setCalendarPopup(true);
+  updateToolTip(QString::number(unixTime));
+  //setToolTip(a_field->getToolTipText());
+  //  checkAndOvertakeContent();
+
+  connect(this, &LogViewDateTimeEdit::editingFinished,
+          this, &LogViewDateTimeEdit::checkAndOvertakeContent);
+}
+
+
+// ---------------------------------------------------------------
+void LogViewDateTimeEdit::checkAndOvertakeContent()
+{
+  updateToolTip(QString::number(dateTime().toMSecsSinceEpoch() / 1000));
+}
+
+
+// ---------------------------------------------------------------
+// Writes the content into telegram.
+// Returns true if successful.
+// ---------------------------------------------------------------
+bool LogViewDateTimeEdit::saveContent(LogViewTelegram* a_telegram)
+{
+  if (a_telegram->isJsonTelegram())
+  {
+    a_telegram->setJsonValue(m_Field->jsonPath(), dateTime().toMSecsSinceEpoch());
+  }
+  else
+  {
+    a_telegram->setNextFieldAsGpsTimeField(); // fixme: muss noch der feldname auf GPS Zeit geprüft werden?
+    a_telegram->setUIntX(getSize(), dateTime().toMSecsSinceEpoch() / 1000);
+  }
+  return true;
+}
+
+} // namespace N_LogView
+