expose polyline of sensor.last_activity that has attribute hasPolyline = True

[antsve]

Is your feature request related to a problem? Please describe.
I want to be able to display latest activity on a map

Describe the solution you'd like
as ha-map-card has extended abilities to use L.polyline (leaflet) i think the esiest way would be just to expose the polyline as an attribute in the sensor.latest_activity

Describe alternatives you've considered
Posted the same issue with ha-strava for them to expose the polyline

Additional context
NA