Add route bus stops to timetable map

[houbly]

What

The map view for each bus/tram timetable should show the route of the service on the map with the different stops plotted to the maps. See https://www.figma.com/file/0EvvTWMZXlKDrQ9WcINGsn/Station-and-Stops?node-id=534%3A16080. There are currently some issues with data inconsistencies for the latitude and longitude points of the stations when getting the sequence data from the APIs so this will require some backend support to find and fix the issues.

APIs

Polyline coordinates for bus/tram routes: journeyplanner.networkwestmidlands.com/api/TimetableStopApi/getRouteMap/:stateless/:version/:direction/:when/Tfwm-Api/Line/:lineid/Route/sequence/:direction

Route sequence with stop coordinates:
api.wmnetwork.co.uk/Tfwm-Api/Line/:lineid/Route/sequence/:direction

Example coordinate inconsistencies with 11 bus route:

Example with route showing correctly (tram):