Support Phone Number Validation

[insightindustry]

It would be helpful to extend the validator collection with a validators.phone_number() validator and checkers.is_phone_number() checker.

Key requirements around this validator would be to:

• support the diverse phone number structures and styles that operate globally
• support the ability to validate phone number structures to a specific country-style OR to validate them against all country-styles
• support the optional "de-hydration" of phone numbers to reduce them to their numerical components only
• support the optional "re-hydration" of phone numbers to add back in stylistic "sugar" (e.g. + for the country code, (...) for area codes, etc.