New cpp folder structure

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

libs/indexer/classificator_loader.hpp

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <string>
+
+namespace classificator
+{
+void Load();
+
+// This method loads only classificator and types. It does not load and apply
+// style rules. It can be used only in separate modules (like pybindings) to
+// operate with number-string representations of types.
+void LoadTypes(std::string const & classificatorFileStr,
+               std::string const & typesFileStr);
+}  // namespace classificator