Feature request: Allow to query list of domains

[Raviu56]

Hello,
At 1st thanks for the excellent too.
I want to be able to query a list of domain to make use efficient use of the connection For https/tls for example would not it much more efficient to query all domains on the same connection instead of a loop where q is opened/closed for each query?

A delay option in milliseconds can be added to accommodate with rate limit requirement of some servers.
So one can use q as this for example:
q A @tls://mygooddns.server q.com qq.com qqq.com g.net go.io
And optionally as this for example:
q --delay-between-queries-ms=50 A @tls://mygooddns.server q.com qq.com qqq.com g.net go.io