Adding category to every Description

[drfenixion]

Hello, thank you for good project.

It will usefull to add category to every description.
Something like this - "a1_description": Description(Format.URDF, [Category.SOME_CATEGORY, Category.SOME_OTHER_CATEGORY]), in _descriptions.py

Do you have any plans?

[stephane-caron]

Thank you for this suggestion 👍 I like the idea and I can imagine a use case where e.g. one would like to load all robots of a given morphology (quadruped, humanoid, ...) I've started a proposal for this in #133.