Add query option for the map tile {zoom}/{x}/{y} format

[jairveder]

Is your feature request related to a problem? Please describe.
I like using the Geotile grid aggregations, but unfortunately I need to add quite a bit of logic for converting the {zoom}/{x}/{y} format to a boundingbox when fetching documents for a specific geotile.

Describe the solution you'd like
I would like to have an additional type of query: GeoTileQuery which accepts zoom, x, and y or the {zoom}/{x}/{y} format.

Describe alternatives you've considered
Currently I am working around this by converting the zoom/x/y to a boundingbox.