Run ign-cmake's copy of check_test_ran

[chapulina]

Summary

Ignition CMake has been running check_test_ran.py scripts contained in each Ignition library. But these scripts are all very similar, if not exactly the same. It's much more convenient to maintain a single copy of this script that all libraries can use.

• Update check_test_ran to match the one on ign-gazebo so that it prints meaningful test names.
• Install the tools directory alongside benchmark and coverage.
• Note that this also installs tools/doc_check.sh, which is not used yet, but once it's installed, it could be used from CMake instead of downloading it from GitHub, see Add documentation check with doxygen gazebo-tooling/action-gz-ci#30.
• Remove the tools/code_check.sh script, which I think doesn't have any use currently.

I don't believe any changes are needed in https://github.com/ignition-release/ign-cmake2-release to install these files, because benchmark and coverage are already being installed correctly.

Test it

Install this branch with this PR gazebosim/gz-math#211, which removes that library's own copy of the script.

Checklist

• Signed all commits for DCO
• Added tests - no 😢 just manual testing with ign-math ☝️
• Added example and/or tutorial
• Updated documentation (as needed)
• Updated migration guide (as needed)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

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[scpeters]

This looks good to me. My only thought is a bike-shed about installing to scripts instead of tools, but this is not important

[j-rivero]

Thanks for cleaning up the whole mess. I don't see any problem with the changes in the code.