Working on TcpTransport.
Implemented TCP transport receiver logic.
Updated the SharpTL submodule ref.
Small refactoring: changed namespaces for some types.
Improved test.
TcpTransport: implemented logic for processing received buffers under 4 bytes.
Fixed bug with receive small parts less than 4 bytes. (Test updated).
Moved useless operations in the TcpTransport.ProcessReceivedData() method.
Implemented TcpTransport.Send().
Merge branch 'feature/tcp-transport' into develop