Requesting support for SHUTDOWN and CLIENT PAUSE, CLIENT UNPAUSE

### Feature request type

enhancement

### Is your feature request related to a problem? Please describe

We are trying to have graceful failover in CLUSTER mode for our application.
The following command support will enhance the durability.

### Describe the solution you'd like

SHUTDOWN: https://redis.io/docs/latest/commands/shutdown/
CLIENT PAUSE: https://redis.io/docs/latest/commands/client-pause/
CLIENT UNPAUSE: https://redis.io/docs/latest/commands/client-unpause/

### Describe alternatives you've considered

_No response_

### Additional context

_No response_

No files, tests, or entry points are named. Start by locating Garnet's handling of Redis commands and the existing cluster or failover tests, then compare their behavior with the linked SHUTDOWN, CLIENT PAUSE, and CLIENT UNPAUSE specifications. Done means the requested commands work correctly in cluster mode and are covered by tests.

Written by the indexing model from the issue text.