Set Cloudflare as default DNS resolver in Brave

[jumde]

The privacy policy for the Cloudflare's new DNS resolver over HTTPS sounds pretty solid.

https://blog.cloudflare.com/dns-resolver-1-1-1-1/ https://developers.cloudflare.com/1.1.1.1/commitment-to-privacy/privacy-policy/privacy-policy/

And there has been interest in the community to make make Cloudflare's DNS resolver default in Brave.

https://community.brave.com/t/1-1-1-1-dns-resolver-from-cloudflare/19143

[jumde]

cc: @diracdeltas @davidtemkin @flamsmark

[cndouglas]

Related: #13690

[Brcrwilliams]

Is it actually necessary to do anything for this? DNS should be configured at the OS level, not the application level.