Add contributor badge

[GeorgianaElena]

This makes the contributing guide one-click away from possible contributors 🚀

This is how it would look like:

[consideRatio]

I'd like to merge this quickly, but I would like to make a refresher on the contributing documentation first.

[betatim]

What do you have in mind for the contrib docs update?

[yuvipanda]

@consideRatio what do you think of merging this first, and then maybe we can open an issue on making changes to the CONTRIBUTING docs?

[consideRatio]

Deal - i feel a need to get the contributing docs improved, i didnt like the outcome of my work with the docs about local development using kind.

One thing at the time, sorry for delay!