Move SDK include and source to base

src/NazaraSDK/State.cpp

@@ -0,0 +1,16 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NazaraSDK/State.hpp>
+
+namespace Ndk
+{
+	/*!
+	* \ingroup NDK
+	* \class Ndk::State
+	* \brief NDK class that represents a state of your application
+	*/
+
+	State::~State() = default;
+}