Allow Kvrocks to become a replica of Redis

### Search before asking

- [X] I had searched in the [issues](https://github.com/apache/kvrocks/issues) and found no similar issues.

### Motivation

We would like to support parsing the RDB file in #1753
and after that, it'd be simple to support Kvrocks as a replica
of the Redis instance.

### Solution

_No response_

### Are you willing to submit a PR?

- [x] I'm willing to submit a PR!

Start by reading issue #1753 to understand the proposed RDB parsing support, then trace how Redis replication would need to connect to that work. The issue names no files or tests; done means defining and implementing the behavior that lets Kvrocks become a replica of a Redis instance.

Written by the indexing model from the issue text.