New cpp folder structure

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

libs/platform/downloader_utils.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+
+namespace downloader
+{
+std::string GetFileDownloadUrl(std::string const & fileName, int64_t dataVersion, uint64_t diffVersion = 0);
+bool IsUrlSupported(std::string const & url);
+std::string GetFilePathByUrl(std::string const & url);
+}  // namespace downloader
+