Seychelles IBAN parsing rules

Examples

    iex>  %IbanEx.Iban{
    ...>    country_code: "SC",
    ...>    check_digits: "18",
    ...>    bank_code: "SSCB11",
    ...>    branch_code: "01",
    ...>    account_number: "0000000000001497USD"
    ...>  }
    ...>  |> IbanEx.Country.SC.to_string()
    "SC 18 SSCB11 01 0000000000001497USD"