[RFC] Replace character counter "data-length" attribute

[mauromascarenhas]

Hello guys, I'd like to propose a breaking change for CharacterCounter component.

The thing is: input and textarea elements already have a "maxlength" (textarea#maxlength) attribute. Thus, I believe that the "data-length" attribute could be deprecated in favour of this standard attribute, since it is semantically correct, provides better support to field validation and is better handled by assistive technologies (eg.: screen readers).

I already have a branch prepared to make a PR if you guys agree with this change (since v2 is still in alpha, this breaking change would not be a major issue).

[wuda-io]

Yes, sounds good! 👍 I am looking forward and would review the PR! :)