Feature Request - DNSCrypt Anonymized DNS

### Prerequisites

Please answer the following questions for yourself before submitting an issue. **YOU MAY DELETE THE PREREQUISITES SECTION.**

- [ ] I am running the latest version
- [X] I checked the documentation and found no answer
- [X] I checked to make sure that this issue has not already been filed

### Feature Request
Hi, DNSCrypt recently released a new feature for Anonymized DNS ( https://github.com/DNSCrypt/dnscrypt-proxy/wiki/Anonymized-DNS ). Does AdGuardHome support this when connecting to a DNSCrypt server such as AdguardDNS or Quad9?