Add more supported types

[JorgenStenshaugen]

When anonymizing Woocommerce I stumbled upon some missing types to use for the shipping/billing fields

Address types missing:
For _billing_city field in WC I'd need a one word string for the City. So a type addressCity would solve this.
For _billing_country expects a country code for example "NO" or "SV". A type addressCountryCode would solve this.

_billing_address_index is a little more tricky. It stores the whole billing address including the:

• Firstname
• Lastname
• Billing address 1
• Billing address 2
• City
• State
• Postcode
• Country code
• Email
• Phone number

I think it's stored as a string in the database with spaces between them.

[dekode-kevin]

We are also missing "social security number"

In norway this is a 12 number code with date month year and a random number. Example:
010122123456

[pdewouters]

A simple number type would be useful too