add Polyline and Polygon click listeners

[tobrun]

Closes #3720, still a WIP though fully functional.
Going to land #9424 first as it introduces a couple of refactors to related code.

[tobrun]

First tests above were done with an emulator with mouse support. On a real device it's harder to get a correct tap registered, will have to move from using tapPoint to tapRectangle.

[tobrun]

Below small test with Polygon holes:

[1ec5]

First tests above were done with an emulator with mouse support. On a real device it's harder to get a correct tap registered, will have to move from using tapPoint to tapRectangle.

This makes sense, since even marker selection via mbgl::Map::queryPointAnnotations() takes a rectangle rather than a point.

[Guardiola31337]