Support redis-py 4.0.2 Hash ops in django-redis

[2ykwang]

Problem Statement

django-redis doesn’t implement all the hash commands available in redis-py (4.0.2).
I plan to work on implementing the missing commands,
I’d appreciate any feedback on this proposal, especially regarding potential edge cases or test strategies.

Additional context

Currently supported hash commands

Hash Command	django-redis	redis-py 4.0.2	redis-py 5.2.0
HDEL	V	V	V
HEXISTS	V	V	V
HGET		V	V
HGETALL		V	V
HINCRBY		V	V
HINCRBYFLOAT		V	V
HKEYS	V	V	V
HLEN	V	V	V
HSET	V	V	V
HSETNX		V	V
HMSET		V	V
HMGET		V	V
HVALS		V	V
HSTRLEN		V	V
HEXPIRE			V
HPEXPIRE			V
HEXPIREAT			V
HPEXPIREAT			V
HPERSIST			V
HEXPIRETIME			V
HPEXPIRETIME			V
HTTL			V
HPTTL			V

related issue:

• Implementing HGET #736
• how to support hash ops, such as hset, hget... #741
• Support redis hashes in the API #373