Support new `DELIFEQ` command

[rueian]

See valkey-io/valkey#1975 for more details.

TODO:

1. Add DELIFEQ to our commands.json
2. Run go generate to generate the new command builders.

You can find the definition of the new command here:
https://github.com/valkey-io/valkey/pull/1975/files#diff-3d023e4d0a01b84dab2de3b640ed1ef575b56e1bda26a7be444bf740a8087526

[Krish8955]

Hi @rueian , I’d like to work on this issue as my first contribution.
Just to confirm: the steps are to add the DELIFEQ command to commands.json and then run go generate to build the new command, correct?

[rueian]

Yes. Thank you @Krish8955.