[Proposal] Allow redislock to compatible with multi versions of go-redis

[git-hulk]

Currently, redislock only depends on the Redis EVAL/EVALSHA command
but directly introduces the go-redis/v9 scripter as the RedisClient interface.
And make it incompatible with other versions of the Redis client like go-redis/v8.

I think we can avoid binding to any versions by moving the scripter outside the go-redis.

I will be happy to support this if it sounds good to you.

related issue: #48

[dim]

Sounds good in principle, but I am not sure how this would work in practice. Do you mind a PR?

[git-hulk]

@dim Sure, thank you! I will submit a PR for this.

[harryeti]

@git-hulk I have the same requirement and need to connect to two different versions of redis at the same time. Looking forward to your PR. :)