ADD: added test for direct zmq tcp and a first version of the server and client class

include/DirectCommunicationServer.hpp

@@ -27,20 +27,22 @@ namespace DirectCommunication
             void sendMessage(std::string msg);
             std::unique_ptr<std::string> getLatestMessage();
 
+            int countClients();
+
         private:
             ushort port_;
 
             zmq::context_t context_;
             zmq::socket_t socket_;
 
-            void worker_();
+            void workerFunc_();
             std::thread Worker_;
             std::atomic_bool stopWorker_;
 
             WHISPER::threadSafeQueue<std::string> receivedMessages_;
             std::vector<std::uint32_t> connectedClients_;
 
-            bool hasClient(std::uint32_t);
+            bool hasClient(std::uint32_t clientId);
 
             
     };