Add missing nostalgia directory level in src tree

src/nostalgia/core/gfx.hpp

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2016-2017 gtalent2@gmail.com
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+#pragma once
+
+#include <ox/std/types.hpp>
+
+namespace nostalgia {
+namespace core {
+
+ox::Error initGfx();
+
+void initConsole();
+
+void puts(int loc, const char *str);
+
+}
+}