No support for redis functions

[yuvalhvim]

Hey, we wanted to use this package for a project, but we do not want to give redis permissions for any eval function.
We use redis 7, which supports embedding functions into it.

Can this package support calling redis functions instead of using scripts and eval_sha?
That way the user can supply whatever logic they want (maybe just use the scripts in this repo with some small adjustments (and maybe even have these functions in this repo)) and pass to the package the function names for locking releasing and extending.