it would be cool to be able to do PostGIS related queries (e.g. query all users within radius of X km) using the supabase-js API. This example: https://github.com/saidheerajv/supabase-geodb/blob/main/queries/get_listings.plv8 uses an rpc call to achieve this, but it would be nicer to not have to write postgres functions for geolocation specific use cases