New cpp folder structure

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

libs/routing/routes_builder/data_source_storage.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "indexer/data_source.hpp"
+
+#include <list>
+#include <memory>
+#include <mutex>
+
+namespace routing
+{
+namespace routes_builder
+{
+class DataSourceStorage
+{
+public:
+  void PushDataSource(std::unique_ptr<FrozenDataSource> && ptr);
+  std::unique_ptr<FrozenDataSource> GetDataSource();
+
+private:
+  std::mutex m_mutex;
+  std::list<std::unique_ptr<FrozenDataSource>> m_freeDataSources;
+};
+}  // namespace routes_builder
+}  // namespace routing