New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/coding/reader_writer_ops.hpp

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "coding/reader.hpp"
+#include "coding/writer.hpp"
+
+namespace rw_ops
+{
+  /// Do reverse bytes.
+  /// Note! src and dest should be for different entities.
+  void Reverse(Reader const & src, Writer & dest);
+}