Search for existing validators whithin the company org and add them to the gallery

[aguscha333]

Feature Requests

Checklist

• My feature request is specific to @rootstrap/validate.

• I've searched open issues to make sure I'm not opening a duplicate feature request

Description

There are already some custom validators defined in the Rootstrap Org throughout many repos.

It would be good to go over them, find out what they do, and if adding them to the gallery would be useful and if possible get in contact with the creator of the validator to ask if they want to make the contribution themselves or if the maintainers of this lib should add it.