NAMESERVER() should take a list

[tlimoncelli]

Is your feature request related to a problem? Please describe.
The NAMESERVER() function only takes a single item. It should take a list. Better yet, it should take a string or a list and do the right thing. Maybe using https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat ?

Describe the solution you'd like

var CF_NSLIST = [
    "alec.ns.cloudflare.com.",
    "ligia.ns.cloudflare.com.",
];

D("example.com", ...
    NAMESERVER(CF_NSLIST),
...

Describe alternatives you've considered

The work-around is to use this function.

// NAMESERVERS adds each item in nslist as a NAMESERVER().
// This is needed because NAMESERVER() takes a single item, not a list.
// (Previously this fn was named CF_NAMESERVERS)
function NAMESERVERS(nslist) {
    var nameserver_list = [];
    for (i = 0; i < nslist.length; i++) {
        nameserver_list.push(NAMESERVER(nslist[i]));
    }
    return nameserver_list
}

Additional context
Add any other context or screenshots about the feature request here.