Function save_search_alias 

pub fn save_search_alias(
    cli: &Cli,
    name: &str,
    pattern: &str,
    global: bool,
    description: Option<&str>,
) -> Result<()>

Save a search command as an alias.

Called when user runs sqry search <pattern> --save-as <name>.

Errors

Returns an error if persistence operations fail or output cannot be written.