[docs]: add contributing docs around the repo

[fedeci]

No description provided.

[shebuel-oss]

Hey @fedeci
Can you please explain what you mean by adding contributing docs around?

[fedeci]

Hi @shebuel-oss, I mean adding the various contributing.md files for each package. We are going to add them internally in the next days however! Sorry if you had the intention in picking up this issue. If you are interest in contributing to this project I would suggest you to give a look at https://github.com/withfig/autocomplete/issues