Implement LogStream API Bytestream servicer
Context
That implementation should service ByteStream.Read() and ByteStream.Write() calls following the LogStream API's semantics: https://gist.github.com/EricBurnett/a094e0b8474b834d098e86bf20fa202b#file-logstream-proto-L41
The servicer must keep track of the clients Read()ing a resource and when the last client closes its connection it must delete the data from storage.
Edited by Beth