@Override
  protected TileWriter newTileWriter(OutputStream outputStream) {
    return new JsonTileWriter(outputStream, rootValueSeparator);
  }
exposing meta data (non-tile data) might be useful for most use cases but complicates parsing for simple use cases
=> allow to output tiles, only
planetiler-core/src/main/java/com/onthegomap/planetiler/stream/WriteableJsonStreamArchive.java