Feature request - wildcard DNS records

[suderman]

I normally add a wildcard DNS record to each machine so I can easily host individual services on subdomains. It'd be nice if this script automatically set that up.

For example:

• foo.bar.com -> A record pointing to tailscale IP (already doing this)
• *.foo.bar.com -> CNAME record pointing to foo.bar.com

[cocox]

I have done a PR for that.