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/Common/LtsScriptTimeline/CMakeLists.txt

@@ -0,0 +1,70 @@
+#
+# $Id$
+# $HeadURL$
+# $Author$
+#
+# Created by Mike Wille, SLSE, 2017-03-15
+#
+
+
+# Test
+#ADD_SUBDIRECTORY(Test) Not needed anymore + old 'api'
+
+
+# Library
+SET(LtsScriptTimeline_SRCS
+  tools.h
+  tools.cpp
+  indicator.h
+  indicator.cpp
+  script_timeline.h
+  script_timeline.cpp
+  track_content_widget.h
+  track_content_widget.cpp
+  track_entry.h
+  track_entry_painters.h
+  track_entry_painters.cpp
+  track_entry_previewer.h
+  track_entry_previewer.cpp
+  track_entry_preview_widget.h
+  track_entry_preview_widget.cpp
+  track_select_handler.h
+  track_select_handler.cpp
+  track_resize_handler.cpp
+  track_resize_handler.h
+  track_drag_handler.h
+  track_drag_handler.cpp
+  track_widget.h
+  track_widget.cpp
+  track_header.h
+  track_header.cpp
+  filter_track_widget.h
+  filter_track_widget.cpp
+  filter_background_widget.h
+  filter_background_widget.cpp
+  temporary_pointer_vector.h
+)
+
+SET(LtsScriptTimeline_UICS
+  Ui/indicator.ui
+  Ui/script_timeline.ui
+  Ui/track_widget.ui
+  Ui/filter_track_widget.ui
+  Ui/track_entry_preview_widget.ui
+)
+
+NGL_WRAP_UI(LtsScriptTimeline_SRCS ${LtsScriptTimeline_UICS})
+
+NGL_ADD_LIBRARY2(WS LtsScriptTimeline SHARED ${LtsScriptTimeline_SRCS} ${LtsScriptTimeline_UICS})
+
+NGL_TARGET_INCLUDE_DIRECTORIES(LtsScriptTimeline
+  PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}/../
+)
+
+NGL_TARGET_LINK_LIBRARIES(LtsScriptTimeline
+  Qt5::Core
+  Qt5::Widgets
+  LtsWidgets
+  LtsSessionData
+)