Tap gesture recognizer for style layers

[1ec5]

As discussed in #6505, implementing interactive style layers (for use with the runtime styling API) is a lot more involved than implementing interactive annotations. We can mitigate the pain by offering subclasses of UITapGestureRecognizer and NSClickGestureRecognizer that only send their actions when tapping or clicking on a feature within the map view – and that make it easier to get the tapped/clicked feature.

MGLFeatureTapGestureRecognizer and MGLFeatureClickGestureRecognizer would have a layerIdentifiers property for filtering taps by layer and a -featureInMapView: method for getting the tapped/clicked feature from within the action method.

This is essentially the iOS/macOS equivalent to mapbox/mapbox-gl-js#1002.

/cc @frederoni @incanus

[stale]

This issue has been automatically detected as stale because it has not had recent activity and will be archived. Thank you for your contributions.

[stale]

This issue has been automatically detected as stale because it has not had recent activity and will be archived. Thank you for your contributions.