builtins/diagnostics: add pydoclint

[aemonge]

Supporting extended python doc string documentation lint with https://jsh9.github.io/pydoclint/

[mochaaP]

Waiting for upstream.

[aemonge]

I've also generated documentation on the pydoclint repo-> jsh9/pydoclint#167

[barrett-ruth]

@aemonge I believe this is ready for you to address final comments. Thanks for the contribution!

[aemonge]

Thank you so much for the patience, I've updated the code with the suggestions.

[mochaaP]

Is the null_pydoclint check still needed? I could not find any results of this on github: https://github.com/search?q=null_pydoclint&type=code

[aemonge]

@mochaaP you're right, I had an alias for null_pydoclint, but ended up removing it. Nice catch!

Thanks

[mochaaP]

all severities are currently mapped to "warning". do we still need the mapping table?

[aemonge]

I think we do, at least to show all available serveries.

[mochaaP]

Can you test the updated branch?

[aemonge]

Just did, working :)

[mochaaP]

thank you. 🍻