visualize instructions past first waypoint

At the moment if you add a waypoint we will visualize instructions until the first arrival instruction when you have a route with waypoints you have multiple arrival instructions we should visualize all of them. 🙂

Start by tracing how the plugin visualizes route instructions after waypoints, focusing on where the first arrival instruction stops processing. Verify the behavior with a route containing multiple waypoints, and consider the work done when arrival instructions for every waypoint are visualized.

Written by the indexing model from the issue text.