Group 8 migration: Add build script support and CTest infrastructure

- Added --group8/--no-group8 argument support to new_docker_build.sh
- Added BUILD_GROUP8 variable and GROUP8_TARGETS array
- Fixed ProjectSettingsEditor Qt6 migration (QT5_ADD_RESOURCES → qt6_add_resources)
- Created CTest test files for 4 buildable Group 8 tools:
  - test_ParticipantDataGenerator.cpp
  - test_ProjectSettingsEditor.cpp
  - test_QLedLine.cpp
  - test_QLedMatrix.cpp
- Added test exclusion filters to tests/CMakeLists.txt for Group 8 tools
- Excluded non-CMake projects: JustusTimeline (Python), Mout (web), NodeJs (Node.js), ProjectSettingsParser (Python)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Lts/Tools/ProjectSettingsEditor/CMakeLists.txt

@@ -28,7 +28,7 @@ SET (settingsEditor_UICS
   main_window.ui
 )
 
-QT5_ADD_RESOURCES(settingsEditor_SRCS templates.qrc)
+qt6_add_resources(settingsEditor_SRCS templates.qrc)
 
 NGL_WRAP_UI(settingsEditor_SRCS ${settingsEditor_UICS})
 NGL_ADD_TOOL_ICON(settingsEditor_SRCS)