Monaco IBAN parsing rules

Examples

    iex>  %IbanEx.Iban{
    ...>    country_code: "MC",
    ...>    check_digits: "58",
    ...>    bank_code: "11222",
    ...>    branch_code: "00001",
    ...>    national_check: "30",
    ...>    account_number: "01234567890"
    ...>  }
    ...>  |> IbanEx.Country.MC.to_string()
    "MC 58 11222 00001 01234567890 30"