Qt6 migration: LtsWidgets API fixes, LtsWebSocket logger init, RTI Docker install

- LtsWidgets: Fixed Qt6 API compatibility issues
  - QWheelEvent::delta() → angleDelta().y()
  - QStyleOption::init() → initFrom()
  - QComboBox activated signal signature change
  - QTextCodec removal (UTF-8 default in Qt6)
  - Missing widget includes added

- LtsWebSocket: Fixed m_logger reference initialization
  - Added NGLLoggerBootstrap includes
  - Proper initialization in constructor initializer lists

- CMake: Added BUILD_LTSWEBSOCKET option for temporary exclusion

- Docker: RTI Connext permanent installation script added
  - ci/install-rti-in-docker.sh for persistent RTI setup
  - Removes need for volume mounting RTI into container

- BUILD options: FilterManagement, RTI, Codification, Grantlee, LtsWebSocket
  can be disabled for partial builds during migration

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

qt6-after/qt6-migrated-legatus/Z/src/NGLLogger/CMakeLists.txt

@@ -19,7 +19,7 @@ SET(NGLLogger_HDRS
 ADD_DEFINITIONS(-DBUILDING_NGLLOGGER)
 NGL_ADD_LIBRARY2(ALL NGLLogger SHARED ${NGLLogger_SRCS} ${NGLLogger_HDRS})
 NGL_TARGET_INCLUDE_DIRECTORIES(NGLLogger
-  INTERFACE
+  PUBLIC
     ${CMAKE_CURRENT_SOURCE_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR}/../
     ${CMAKE_CURRENT_BINARY_DIR}