Add amphp/byte-stream

README.md

 ### Streams
 *Libraries for working with streams.*
 
+* [ByteStream](https://amphp.org/byte-stream/) - An asynchronous stream abstraction.
 * [Streamer](https://github.com/fzaninotto/Streamer) - A simple object-orientated stream wrapper library.
 
 ### Dependency Injection