SORT_RO support

[emilienkofman]

Hi and thank you for the great library.

I've figured out redis v7 supports a read only version of the SORT command that can thus be used on a read-only slave replica, see SORT and SORT_RO. I could not find SORT_RO in the v9 library (maybe I missed it?). If I want to add it would you suggest adding a sort option here or making it a separate command to stick to the redis documentation?

Sincerely

[vmihailenco]

Hello,

I would add SORT_RO as a separate command, but I am open to suggestions.

[emilienkofman]

ok thanks for the advice, I've opened a pull request here #2354