Feature/transform

[wep21]

Add transform from https://github.com/ros/ros_comm/blob/noetic-devel/tools/topic_tools/scripts/transform
http://wiki.ros.org/topic_tools/transform

[emersonknapp]

My major concern here is that the Python linters are not run on this script - probably because it doesn't end in .py. I'd like to make sure to apply standard ROS 2 linters to all code here, at the very least (an actual functional test would be nice but I won't block on that).

Could you make it so that the linters run on this new source? Probably you could strip the .py extension and do a chmod on the file as part of the CMake install step.

[wep21]

@emersonknapp I use ament_cmake_python macro instead of pure cmake install and add entry points for transform executable. How about this modification?
Note: SCRIPTS_DESTINATION argument is only available for rolling.
https://github.com/ament/ament_cmake/blob/a51ed2214ce96fe0ef1ee00455cb03ba14bd52f1/ament_cmake_python/cmake/ament_python_install_package.cmake#L44
https://github.com/ament/ament_cmake/blob/a803f8534312a3b6dbe8a274bf788955d40d0eaa/ament_cmake_python/cmake/ament_python_install_package.cmake#L37

[emersonknapp]

Thanks for making the change - I think this looks good to me

[mateusz-lichota]

@emersonknapp @wep21 , the fact that SCRIPTS_DESTINATION is used means that the package doesn't build correctly on galactic. Is that the desired behavior?

[wep21]

@mateusz-lichota I created a PR to address the isseu you suggested. Please check it out. #18

[emersonknapp]

Thanks for the work @wep21 - I have merged that PR