Please add interactive callback events to this widget.

Please add interactive events in this Mapbox widget, like what ipyleaflet has

I see in the [ROADMAP.md](../blob/master/ROADMAP.md)
"Hover/Highlight/select styles on mousemove and selection on click"

I do see some
```
map.on('click', 'linestring', function(e) {
map.flyTo({
center: e.lngLat
});
});
```

But this work does not appear to be done?

Even if this is complete there are no examples of using interactive events in the mapbox [examples](../tree/master/examples/notebooks) directory.

Start with ROADMAP.md and the examples/notebooks directory, then inspect how the widget currently exposes Mapbox interactions and compare the requested behavior with ipyleaflet. Done means interactive callback events are supported and demonstrated in notebook examples, including the hover, highlight, or click behavior described in the roadmap.

Written by the indexing model from the issue text.