Add md5(v3) and sha1(v5) version for DCE in QUuid

Q_ADDON_JSONDB_QSON_EXPORT QByteArray QsonUUIDv3(const QString &source);

QByteArray QsonUUIDv3(const QString &source) {
    QCryptographicHash md5(QCryptographicHash::Md5);
    md5.addData((char *) &QsonUuidNs, sizeof(QsonUuidNs));
    md5.addData((char *) source.constData(), source.size() * 2);
    
    QByteArray result = md5.result();
    
    qson_uuid_t *uuid = (qson_uuid_t*) result.data();
    uuid->time_hi_and_version &= 0x0FFF;
    uuid->time_hi_and_version |= (3 << 12);
    uuid->clock_seq_hi_and_reserved &= 0x3F;
    uuid->clock_seq_hi_and_reserved |= 0x80;
        
    return result;
}