to_dns transformer for domain

Add a to_dns transformer for the domain, which can be triggered with dnsx

Command:
```bash
echo domain.com | dnsx -silent -json -all [-r {ENV:$RESOLVERS}]
```

<img width="1356" height="831" alt="Image" src="https://github.com/user-attachments/assets/ef87a67e-a79c-4853-8fe1-dab4910dcebe" />


Ref:
- https://github.com/projectdiscovery/dnsx