Put/get a Redis hash as a Prolog dict. Putting a dict first deletes
Key. Note that in many cases applications will manage Redis hashes
by key. redis_get_hash/3 is notably a user friendly alternative to
the RedisHGETALL command. If the Redis hash is not used by
other (non-Prolog) applications one may also consider using the
Term as prolog syntax to store the Prolog dict as-is.