[Feature Request] DoH / DoT support

[Motophan]

Feature request: add in the script an option to run Dns over Https or Dns over Tls to a trusted upstream provider (cloudflare, google, quad9, etc)

You could install the bind the dns tunnel to a local address such as 127.53.53.53 where it would be unlikely to cause a port conflict and impossible to resolve dns requests outside the DoH/DoT tunnel.

This should fix #39

[Nyr]

This is best addressed client-side.

Also, it would not fix a DNS leak (which also needs to be addressed client-side).