Add robot-testing-framework recipe

[traversaro]

robot-testing-framework is a testing framework specifically taylored for robotic and cypher physicals systems, that is described in detail in the paper "A Generic Testing Framework for Test Driven Development of Robotic Systems" .
robot-testing-framework is already packaged under the same name in the Debian/Ubuntu distros: https://repology.org/project/robot-testing-framework/versions .

Checklist

• Title of this PR is meaningful: e.g. "Adding my_nifty_package", not "updated meta.yaml".
• License file is packaged (see here for an example).
• Source is from official source.
• Package does not vendor other packages. (If a package uses the source of another package, they should be separate packages or the licenses of all packages need to be packaged).
• If static libraries are linked in, the license of the static library is packaged.
• Build number is 0.
• A tarball (url) rather than a repo (e.g. git_url) is used in your recipe (see here for more details).
• GitHub users listed in the maintainer section have posted a comment confirming they are willing to be listed there.
• When in trouble, please check our knowledge base documentation before pinging a team.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/robot-testing-framework) and found it was in an excellent condition.

[traversaro]

The PR is ready for review. @conda-forge/help-c-cpp

[traversaro]

The PR is ready for review. @conda-forge/help-c-cpp

Actually it still had a few typos in the testing section on Windows, sorry for the noise. Hopefully is should be ok now.

[traversaro]

The PR is ready for review. @conda-forge/help-c-cpp

Actually it still had a few typos in the testing section on Windows, sorry for the noise. Hopefully is should be ok now.

The CI is finally actually green.

[traversaro]

Thanks @xhochy !