The problem/use-case that the feature addresses

Add support for MONITOR command for the RESP3 push type, so, instead of

+1733939274.692107 [0 127.0.0.1:51014] "get" "a"

the connection after sending hello 3 and monitor will receive

>2
$7
monitor
+1733939225.708882 [0 127.0.0.1:51014] "get" "a"

Description of the feature

Original issue is from here antirez/RESP3#21 - first support for redis was opened here redis/redis#11216 .
Now I am reopening it here :) I am not sure this implementation is correct (I am not C expert), in case of any comments I am happy to apply suggested changes.

PR with port: https://github.com/valkey-io/valkey/pull/1426/files