Added Centauro to example-robot-data robots

[AndrePatri]

The new centauro_description weights 9.3 MB total, all meshes are below 0.3MB.

[nim65s]

Hi,

Thanks for this contribution :)

Please add robots/centauro_description/README.md with a source for these files and their license.
And also a unit test.

[cmastalli]

Thanks, @AndrePatri!

It would be nice to include colour information.

[AndrePatri]

@cmastalli, @nim65s, I've added the README.md following the scheme of the other robots and the unit test for nq and nv. As for what concerns the licence, currently the original repo from which I made my fork has no license file, even if it's public. So for now I've put no license. I'll ask people in my research line to add one. As for the colors, I'll try to do it, but I can't guarantee it will happen soon.

[cmastalli]

I am happy to proceed merging this PR without the colour changes.

We can always fix them later.

[nim65s]

I'm afraid we are not allowed to modify / redistribute things that do not have an explicit license allowing us to do these modifications / redistributions.
At least here, in France, any work provided without a license must be considered as closed-source and can not be used in any way.
So if you want us to merge this, please contact the upstream authors to fix that TODO in their repo first, and then don't hesitate to re-open this PR.

[AndrePatri]

@nim65s iit-centauro-ros-pkg is now licensed under the Apache-2.0 license

[nim65s]

Thanks for the license !
We now just need to fix the paths to get green CI and this is good for me