{rolling} rmf-traffic-editor: add missing dependencies and restrict with qt5, qt5-widgets skip group

* add ament-cmake-libraries to fix:
| -- Found ament_cmake: 1.1.4 (/jenkins/mjansa/build/ros/webos-rolling-hardknott/tmp-glibc/work/qemux86-webos-linux/rmf-traffic-editor/1.3.0-3-r0/recipe-sysroot/usr/share/ament_cmake/cmake)
| CMake Error at /jenkins/mjansa/build/ros/webos-rolling-hardknott/tmp-glibc/work/qemux86-webos-linux/rmf-traffic-editor/1.3.0-3-r0/recipe-sysroot/usr/share/ament_cmake/cmake/ament_cmake_export_dependencies-extras.cmake:5 (find_package):
|   By not providing "Findament_cmake_libraries.cmake" in CMAKE_MODULE_PATH
|   this project has asked CMake to find a package configuration file provided
|   by "ament_cmake_libraries", but CMake did not find one.
|
|   Could not find a package configuration file provided by
|   "ament_cmake_libraries" with any of the following names:
|
|     ament_cmake_librariesConfig.cmake
|     ament_cmake_libraries-config.cmake
|
|   Add the installation prefix ...