Implemented LZMA frame encoder

Motivation:

LZMA compression algorithm has a very good compression ratio.

Modifications:

- Added `lzma-java` library which implements LZMA algorithm.
- Implemented `LzmaFrameEncoder` which extends `MessageToByteEncoder` and provides compression of outgoing messages.
- Added tests to verify the `LzmaFrameEncoder` and how it can compress data for the next uncompression using the original library.

Result:

LZMA encoder which can compress data using LZMA algorithm.

See issue #81
I think this can be removed completely with my proposed change: https://github.com/netty/netty/pull/2781/files#diff-c99f5022325c321f9a9ce7508da2f511R184