ParserOptions DSL

[Jolanrensen]

Something like:

parserOptions {
    locale = Locale.GERMAN
    dateTime = kotlin {
        formats += LocalDateTime.Formats.ISO
        formats += pattern<LocalTime>("hh:mm")
    }
}

may be more Kotlinlike than

ParserOptions(
    locale = Locale.GERMAN,
    dateTime = DateTimeParserOptions.Kotlin
        .withFormat(LocalDateTime.Formats.ISO)
        .withPattern<LocalTime>("hh:mm"),
)

Follow up for #1777