[raknet] Add TCPInterface class

* Adds TCPInterface ctor
* Adds `TCPInterface::Receive()`
* Adds `TCPInterface::HasLostConnection()`

raknet/TCPInterface.h

@@ -0,0 +1,31 @@
+// TODO: Implement TCPInterface.h
+
+#ifndef __SIMPLE_TCP_SERVER
+#define __SIMPLE_TCP_SERVER
+
+#include "NetworkTypes.h"
+#include "SingleProducerConsumer.h"
+#include "Export.h"
+
+/// \internal
+/// \brief As the name says, a simple multithreaded TCP server.  Used by TelnetTransport
+class RAK_DLL_EXPORT TCPInterface
+{
+public:
+	TCPInterface();
+
+	/// Returns data received
+	Packet* Receive( void );
+
+	/// Queued events of lost connections
+	PlayerID HasLostConnection(void);
+
+protected:
+	bool isStarted;
+
+	DataStructures::SingleProducerConsumer<Packet> incomingMessages;
+
+	DataStructures::SingleProducerConsumer<PlayerID> lostConnections;
+};
+
+#endif