Add phone number types

[JamesHutchison]

This introduces a generic international phone number and a phone number type that defaults to the US. The default format includes extensions.

Feel free to comment heavily.

Addresses:

https://github.com/pydantic/pydantic/issues/1551 - phone number type, which quite a lot of attention

From https://github.com/pydantic/pydantic/issues/5012

[JamesHutchison]

I'm out of time. Will look at the issues caught by the CI later

[yezz123]

Hello @JamesHutchison you can rebase this, and its will work!

I will give it a review!

[yezz123]

I add some changes! and test it locally its works fine!

Thank you @JamesHutchison ⭐

[asaah18]

Just to make sure, is the default format E.164 standard? As in, +9665xxxxxxxxwhere 966 is the country code?

[JamesHutchison]

The default format is RFC3966 which supports extensions

[nameer]

How to set the default region code or the format type while using PhoneNumber in a model?