Qatar IBAN parsing rules

Examples

    iex>  %IbanEx.Iban{
    ...>    country_code: "QA",
    ...>    check_digits: "58",
    ...>    bank_code: "DOHB",
    ...>    branch_code: nil,
    ...>    national_check: nil,
    ...>    account_number: "00001234567890ABCDEFG"
    ...>  }
    ...>  |> IbanEx.Country.QA.to_string()
    "QA 58 DOHB 00001234567890ABCDEFG"