Rust

Add `ST_GeoHash`, `ST_Box2dFromGeoHash`, `ST_PointFromGeoHash` #2314

Job	Run time
Lint and Test	8m 36s
check-features-with-external-dependencies (-F gdal -F gdal/bindgen)	35s
check-features	27s
check-features-with-external-dependencies (-F geos)	1m 8s
check-features (-F csv)	28s
check-features-with-external-dependencies (-F proj)	1m 6s
check-features (-F flatgeobuf)	22s
check-features (-F flatgeobuf_async)	55s
check-features (-F ipc_compression)	52s
check-features (-F parquet)	28s
check-features (-F parquet_async)	28s
check-features (-F parquet_compression)	20s
check-features (-F polylabel)	27s
check-features (-F postgis)	59s
check-features (-F rayon)	26s
	17m 37s

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