* Adds a line-based frame decoder that can split received buffers on line endings.
Motivation:
As per https://github.com/apple/swift-nio/issues/473
Modifications:
Added a new decoder (LineBasedFrameDecoder) that splits incoming buffers on line end characters.
Result:
Received buffers will be split on line end character(s) ('\n' or '\r\n'), with these characters
stripped in the resulting buffers.
