Hello all, As a sedona user, I'd like to be able to create covers and compress geohashes. These are features of some IBM libraries <https://www.ibm.com/docs/ja/db2-warehouse?topic=concepts-geohashes-geohash-covers>.
Essentially I'd like to add something akin to `ST_GEOHASH_COVER` function and perhaps a `ST_GEOHASH_COMPRESSION` function. This surprisingly doesn't have much support in OSS libraries as far as I can tell, but implementation on some level should be doable IMO. This would allow users to use geohash as another way to index their data, one that is more compatible with other query engines (EG: Anything that supports can support geohashes on some level)
