[feature request] : add support for Routes API

[fsty]

Hi! do you plan to add support for the new enhanced version of the Directions and Distance Matrix APIs : https://developers.google.com/maps/documentation/routes/migrate-routes

[dcooley]

Hi - thanks I wasn't aware of this new Routes API. I'll try and make time in a few weeks to implement it. If you want to try it yourself I'll happily accept a PR.