Fix some missing files

src/Nazara/OpenGLRenderer/DummySurface.cpp

@@ -0,0 +1,20 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - OpenGL Renderer"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/OpenGLRenderer/DummySurface.hpp>
+#include <Nazara/OpenGLRenderer/Debug.hpp>
+
+namespace Nz
+{
+	bool DummySurface::Create(WindowHandle handle)
+	{
+		m_handle = handle;
+		return true;
+	}
+
+	void DummySurface::Destroy()
+	{
+		m_handle = nullptr;
+	}
+}