New cpp folder structure

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

tools/poly_borders/poly_borders_tests/tools.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "platform/platform_tests_support/scoped_file.hpp"
+
+#include "geometry/point2d.hpp"
+
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace poly_borders
+{
+std::shared_ptr<platform::tests_support::ScopedFile>
+CreatePolyBorderFileByPolygon(std::string const & relativeDirPath,
+                              std::string const & name,
+                              std::vector<std::vector<m2::PointD>> const & polygons);
+}  // namespace poly_borders