Implement hadoop's CompressionCodec interface

This would allow to use brotli in hadoop and secor.

Ideally, the implementation of [CompressionCodec][1] should also implement [Configurable][2] so that brotli parameters can be set via configuration.

[1]: https://hadoop.apache.org/docs/r2.8.0/api/org/apache/hadoop/io/compress/CompressionCodec.html
[2]: https://hadoop.apache.org/docs/r2.8.0/api/org/apache/hadoop/conf/Configurable.html