Implement client library and its support on the FlameStream side

[mrMakaronka]

There is a need for client library with the following features:

1. Upload jar with dependencies (it requires new functionality at the backend)
2. Push/update graph
3. Attach fronts/rears (currently, only socket)

[mrMakaronka]

Simple client: #151

However, we should done the following tasks before continue:

#147 , #152