LG-11118: zip code format validation

[dawei-nava]

🎫 Ticket

LG-1118: zip code validation

🛠 Summary of changes

Basic zip code validation for zip+4 for US and territories postal code format.

📜 Testing Plan

Provide a checklist of steps to confirm the changes.

• Step 1: Start document capturing session
• Step 2: Use following test yml file

  document:
    type: license
    first_name: Susan
    last_name: Smith
    middle_name: Q
    address1: 1 Microsoft Way
    address2: Apt 3
    city: Bayside
    state: NY
    zipcode: '113642'
    dob: 10/06/1938
    phone: +1 314-555-1212
    state_id_number: '123456789'
    state_id_type: drivers_license

• Step 3: Warning page should shows and asking to "Take a new picture".

[eileen-nava]

I reviewed the code and did a manual QA. Looks good!

[aduth]

This appears to have been the only reference to the generic_error method, so we probably ought to remove the method definition as being unreachable code.

[eileen-nava]

@aduth Good point, I made a follow-up ticket.