New cpp folder structure

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

libs/routing/maxspeeds_serialization.cpp

@@ -0,0 +1,19 @@
+#include "routing/maxspeeds_serialization.hpp"
+
+namespace routing
+{
+std::vector<uint8_t> MaxspeedsSerializer::GetForwardMaxspeeds(
+    std::vector<FeatureSpeedMacro> const & speeds, uint32_t & maxFeatureID)
+{
+  std::vector<uint8_t> result;
+  for (auto const & s : speeds)
+  {
+    if (!s.IsBidirectional())
+    {
+      result.push_back(static_cast<uint8_t>(s.m_forward));
+      maxFeatureID = s.m_featureID;
+    }
+  }
+  return result;
+}
+}  // namespace routing