Add fake.creditCard.{number,verificationCode,expiry}

[serhalp]

Add some credit card factories nested under fake.creditCard:

• number: generate a credit card number conforming to the format of the major U.S. credit card providers
• (?) verificationCode (or something other name): generate a CVV/CSC/etc. conforming to the format of the major U.S. credit card providers
• (?) expiry generate a reasonable credit card expiry date in the MM/YYYY string format

Are these last two useful? Either way, I'd propose to nest the CC number method under fake.creditCard.number() for future extensibility.

[risharma]

Additional properties to consider:

• last4
• type

[serhalp]

@risharma do we have any current use cases for those?

[risharma]

@risharma do we have any current use cases for those?

https://github.com/goodeggs/garbanzo/blob/master/src/graphql/data_sources/user/index.unit.spec.ts#L206-L208

P.S.: I'm fixing to correctly generate last4 in https://github.com/goodeggs/garbanzo/pull/7766