base: add a proxy header for PEGTL.

include/lol/base/pegtl.h

@@ -0,0 +1,26 @@
+//
+//  Lol Engine
+//
+//  Copyright © 2010—2020 Sam Hocevar <sam@hocevar.net>
+//
+//  Lol Engine is free software. It comes without any warranty, to
+//  the extent permitted by applicable law. You can redistribute it
+//  and/or modify it under the terms of the Do What the Fuck You Want
+//  to Public License, Version 2, as published by the WTFPL Task Force.
+//  See http://www.wtfpl.net/ for more details.
+//
+
+#pragma once
+
+//
+// The PEGTL classes
+// —————————————————
+//
+
+//namespace lol
+//{
+
+#include "../3rdparty/pegtl/include/tao/pegtl.hpp"
+
+//} // namespace lol
+