support for multi-polygons (and WKB?) in h3_polygon_wkt_to_cells #175
Description
We use h3_polygon_wkt_to_cells a lot and it's a frequent bottleneck. One of the more annoying parts is having to ST_DUMP() and UNNEST() multipolygons (apparently almost every dataset we encounter loves to use multiploygons, or even better, a mix of multipolygon and polygon geometries). Just wondering if it might be possible / faster / more elegant if h3_polygon_wkt_to_cells could handle these cases automatically.
Probably less of a bottleneck but operating directly on wkb, e.g. a h3_polygon_wkb_to_cells, would be nice too.