New cpp folder structure

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

libs/routing/joint.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "routing/road_point.hpp"
+
+#include "base/buffer_vector.hpp"
+
+#include <cstdint>
+#include <limits>
+#include <string>
+
+namespace routing
+{
+// Joint represents roads connection.
+// It contains RoadPoint for each connected road.
+class Joint final
+{
+public:
+  using Id = uint32_t;
+  static Id constexpr kInvalidId = std::numeric_limits<Id>::max();
+
+  void AddPoint(RoadPoint const & rp) { m_points.emplace_back(rp); }
+
+  size_t GetSize() const { return m_points.size(); }
+
+  RoadPoint const & GetEntry(size_t i) const { return m_points[i]; }
+
+private:
+  buffer_vector<RoadPoint, 2> m_points;
+};
+
+std::string DebugPrint(Joint const & joint);
+}  // namespace routing