Adds H3 unidirectional edge functions

Why it matters

This feature introduces H3 unidirectional edge functions to enable users to work with the hexagonal hierarchical spatial index system more precisely by focusing on directional edges. It enhances spatial data analysis capabilities, allowing for improved modeling of spatial relationships and navigation within geospatial datasets.

How to use it

Users can apply the new H3 unidirectional edge functions by invoking them in their SQL queries where H3 indexing is used. This typically involves calling the specific H3 edge functions within SELECT statements to obtain directional edge data related to H3 cells.