Norway IBAN parsing rules

Examples

    iex>  %IbanEx.Iban{
    ...>    country_code: "NO",
    ...>    check_digits: "93",
    ...>    bank_code: "8601",
    ...>    branch_code: nil,
    ...>    national_check: "7",
    ...>    account_number: "111794"
    ...>  }
    ...>  |> IbanEx.Country.NO.to_string()
    "NO 93 8601 111794 7"