rustyphoenixsocket

This is the Rust version of https://gitlab.in2p3.fr/CTA-LAPP/PHOENIX_LIBS2/network/PhoenixSocket project. This project aims to ease the use of socket in complex environments, especially distributed environments where latencies measurement has to be precise and reproductible when running unit tests. **PhoenixSocket** provide **PGenericSocket**, a template classe which takes two arguments : - The main socket backend (could be **zmq**, **unix socket**, etc) - A mock backend, **PMockBackend**, which can play, register and replay a sequence of socket calls These sockets are activated with a mode `PSocketMode::PSocketMode` which can be : - `PSocketMode::NO_MOCK` : for a normal usage - `PSocketMode::MOCK` : when the mock the desired socket is played - `PSocketMode::MOCK_RECORD` : when the real socket backend is used but the socket mock is recording (could be usefull for debugging or to desing new unit tests quickly)