Addition for juce::RelativeTime to write a technical string

RelativeTimeToString.cpp

    String RelativeTime::toString (bool includeDays) const
    {
        String result;
        result.preallocateBytes (32);

        if (numSeconds < 0)
            result << '-';

        bool empty = true;
        if (includeDays) {
            auto days = (int)inDays();
            if (days > 0) {
                result << String (days) << ' ';
                empty = false;
            }
        }

        result << String ((int)inHours() % 24).paddedLeft ('0', empty ? 1 : 2) << ':';
        result << String ((int)inMinutes() % 60).paddedLeft ('0', 2) << ':';
        result << String ((int)inSeconds() % 60).paddedLeft ('0', 2);
        auto millis = (int)inMilliseconds() % 1000;
        if (millis > 0)
            result << '.' << String (millis).paddedLeft ('0', 3);

        return result.trimEnd();
    }