fun Double?.convertZecToZatoshi(decimals: Int = ZEC_FORMATTER.maximumFractionDigits): Long
Format a Double ZEC value as a Long Zatoshi value, by first converting to ZEC with the given precision. Start with ZEC -> End with Zatoshi.
decimals - the scale to use for the intermediate BigDecimal.
Return
this Double ZEC value converted into Zatoshi, with proper rounding and precision by
leveraging an intermediate BigDecimal object.