Currently we re-write a way's name to

"Name (ref)"

where ref could be the destination if there is no ref. This string-representation is hachky at best and makes it harder for clients to build great guidance.

Task: have independent name, ref, destination fields and expose them to clients.

cc @freenerd @1ec5 @bsudekum

Impl. note: will break hard coded hacks like:

• osrm-backend/include/extractor/guidance/toolkit.hpp

  Lines 166 to 168 in c7a1576

  	inline bool requiresNameAnnounced(const std::string &from,
  	const std::string &to,
  	const SuffixTable &suffix_table)