Allow clients to report name and version (#11758)

This PR allows clients to send information about the client library to redis
to be displayed in CLIENT LIST and CLIENT INFO.

Currently supports:
`CLIENT [lib-name | lib-ver] <value>`
Client libraries are expected to pipeline these right after AUTH, and ignore
the failure in case they're talking to an older version of redis.

These will be shown in CLIENT LIST and CLIENT INFO as:
* `lib-name` - meant to hold the client library name.
* `lib-ver` - meant to hold the client library version.

The values cannot contain spaces, newlines and any wild ASCII characters,
but all other normal chars are accepted, e.g `.`, `=` etc (same as CLIENT NAME).

The RESET command does NOT clear these, but they can be cleared to the
default by sending a command with a blank string.

Co-authored-by: Oran Agra <oran@redislabs.com>

0 files changed, 0 insertions, 0 deletions