Stub of FLpxSockets is now in place

Source/Integration/LuprexSockets.hpp

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+#pragma once
+
+#include "CoreMinimal.h"
+
+// Class FLpxSockets
+//
+// This class is responsible for creating outgoing and incoming
+// sockets for the Luprex engine.  It then relays data into and out
+// of the Luprex engine.
+//
+// It only has one interesting method: Update().  This one method
+// does all the communication for the Luprex engine.  Note that
+// there aren't any methods where Unreal can query the state
+// of the FLpxSockets.  That's because this class is for
+// communication between Luprex and outside servers and clients,
+// NOT for communication with Unreal.
+//
+// The FLpxSockets keeps a pointer to the EngineWrapper.
+// The EngineWrapper must outlive the FLpxSockets.
+//
+// This class is an abstract base class.  A derived class
+// implements all the behavior.
+//
+
+class FLpxSockets;
+struct EngineWrapper;
+
+class FLpxSockets
+{
+protected:
+	FLpxSockets() {}
+
+public:
+	// Create the Luprex socket system.
+	static FLpxSockets* Create(EngineWrapper *w);
+
+	// Delete the luprex socket system.  Cleanly closes all sockets.
+	virtual ~FLpxSockets() {}
+
+	// The update routine relays data into and out of
+	// luprex via TCP/IP sockets.
+	virtual void Update() = 0;
+};