geodomain/geosite matching for DNS in JSONv5 config

[yangbowen]

The new JSONv5 config format doesn't seem to support prioritizing name servers by geodomain/geosite matching, which is supported in prior versions. Only Full/Subdomain/Keyword/Regex matching is supported for DNS.

[yangbowen]

Also, PriorityDomainObject (used for DNS) specifies the types Full/Subdomain/Keyword/Regex while DomainObject (used for routing) specifies Full/RootDomain/Plain/Regex. And the former uses "domain" as the key while the later uses "value". Aside from these they seem to do exactly the same thing? So I think it might be better to just reuse the same scheme for both.