Let user add a via point

[mrkhan]

Heal client
Steps to reproduce:

1. Add start point and destination point
2. Right-click on other place on map
3. click "Add Stop here" gives an error message "When using alternative routes option it is not possible to define route stops"

[TheGreatRefrigerator]

That's a ors backend issue. You can't use alternative routes with waypoints.

{"error":{"code":2011,"message":"Parameter 'alternative_routes' is incompatible with parameter '(number of waypoints > 2)'."},"info":{"engine":{"build_date":"2023-07-09T01:31:50Z","version":"7.1.0"},"timestamp":1689071156894}}

[TheGreatRefrigerator]

Is this needed or nice to have?

[mrkhan]

Its needed. Planning to change alternative_routes to 1 if new stops points are added