Israel IBAN parsing rules

Examples

    iex>  %IbanEx.Iban{
    ...>    country_code: "IL",
    ...>    check_digits: "62",
    ...>    bank_code: "010",
    ...>    branch_code: "800",
    ...>    national_check: nil,
    ...>    account_number: "0000099999999"
    ...>  }
    ...>  |> IbanEx.Country.IL.to_string()
    "IL 62 010 800 0000099999999"