Feature: support REDIRECT in the standalone client implementation

[rueian]

The standalone Valkey 8 server can respond with REDIRECT messages when a client enables CLIENT CAPA redirect, therefore, our standalone client implementation should be able to follow them.

Related to valkey-io/valkey-doc#164 and https://valkey.io/commands/client-capa/

TODO:

• Add EnableRedirect to the StandaloneOption struct and send CLIENT CAPA redirect command when making connections.
• Check if a response is a REDIRECT message and do the redirection in the standalone client implementation.