Add waypoint indices option for Directions API

[danesfeder]

The Directions API will soon expose a waypoints parameter similar to the Map Matching API’s: Project-OSRM/osrm-backend#5345.

We should add / account for this parameter - iOS equivalent in mapbox/mapbox-directions-swift#334

[1ec5]

This SDK exposes the waypoints parameter as a simple array of integers, so the same code could probably be copied to RouteOptions.

mapbox-java/services-matching/src/main/java/com/mapbox/api/matching/v5/MapboxMapMatching.java

Line 337 in 22a324f

private Integer[] waypoints;

mapbox/mapbox-directions-swift#334 discusses some refactoring we’d like to do on the Swift side to make the option more object-oriented, but the approach in Java might differ since this SDK follows the Builder pattern.

[osana]

@1ec5 good point about RouteOptions. Thank you for bringing it up.

I think you are absolutely right those should be added to the RouteOptions.
In fact they should be added to RouteOptions in MapMatching as well.