Wildcard support

I've noticed you can't currently use any regex when defining urls, but is there some other way to leverage different subdomains or wildcard characters?

For example, I want to crawl multiple subdomains that follow a similar structure `https://pco[NAME].zendesk.com/`. I was thinking I could change the `match` field to accept a string array, and also couldn't use regex to wildcard the [NAME] piece of the subdomain. Is there some other way to achieve this?

Start by locating the URL configuration and the `match` field handling described in the issue. Determine how URL patterns are currently evaluated, then define support for matching multiple subdomains such as `https://pco[NAME].zendesk.com/`; done means the requested wildcard or equivalent matching behavior works for that example.

Written by the indexing model from the issue text.