Auto formatting for phone number and SSN

[racheledelman]

SHIBA is in the process of building this and will contribute it when done.

As a client I want to see the formatting for my phone number/SSN so that I don't have to worry about putting it in the wrong way

Live example

• When I type in my phone number, then the parentheses and dashes automatically show up as I type
• Show number keyboard on mobile Resource: https://css-tricks.com/finger-friendly-numerical-inputs-with-inputmode/
• fields are still validated for the right number/type of characters

Masking for phone numbers: https://github.com/rajaramtt/jquery-input-mask-phone-number

General maksing: https://igorescobar.github.io/jQuery-Mask-Plugin/

[racheledelman]

See previous discussion #60.