Feature Request: Ability to add new DNS servers using QR code

[AgrimPrasad]

Currently, if the user wants to add a new DNS resolver, then they need to go to Settings -> Select DNS over HTTPS server and then manually enter the URL.

Would be much better if there was a single "+" button with the option to scan a QR code for this. This would be similar to how the Wireguard Android app can setup new VPN profiles using QR codes.

Once this feature is added to Intra, I'm sure the DNS providers will add QR codes alongside there published URLs.