feat: support vectorset

[fukua95]

vectorset commands: https://redis.io/docs/latest/develop/data-types/vector-sets/

[ndyakov]

Thank you @fukua95, will review as soon as possible.

[ndyakov]

left two comments, this is just a partial review.

[ndyakov]

@fukua95 we will have a discussion next week, overall I think the PR looks good, if the team agrees on the return types, I will merge this, thank you.

[fukua95]

@fukua95 we will have a discussion next week, overall I think the PR looks good, if the team agrees on the return types, I will merge this, thank you.

Thank you for your review.

If there is anything that needs to be updated (the return types or others), please feel free to let me know.

One more thing: The VSim command in Redis code (unstable) has the option Epsilon, by the doc in Redis.io don't have. I'll modify the code after you decide whether to keep this option.