LibIPC: Start fleshing out a separate IPC library

This will be a place to put object serialization/deserialization logic,
message parsing, endpoint management, etc.

Libraries/LibIPC/IEndpoint.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <AK/AKString.h>
+
+class IEndpoint {
+public:
+    virtual ~IEndpoint();
+
+    const String& name() const { return m_name; }
+
+protected:
+    IEndpoint();
+
+private:
+    String m_name;
+};