United Arab Emirates IBAN parsing rules

Examples

    iex>  %IbanEx.Iban{
    ...>    country_code: "AE",
    ...>    check_digits: "07",
    ...>    bank_code: "033",
    ...>    branch_code: nil,
    ...>    national_check: nil,
    ...>    account_number: "1234567890123456"
    ...>  }
    ...>  |> IbanEx.Country.AE.to_string()
    "AE 07 033 1234567890123456"