Add a "Random" option to the DNS settings

[dontcrash]

Discussed in #4748

^{Originally posted by dontcrash July 16, 2022}

[chriskillpack]

@ainar-g If this seems like a reasonable feature then I'm willing to take this on as my a first contrib to this repo. Looking around ADG code the core change will be dnsproxy.

[dontcrash]

@ainar-g If this seems like a reasonable feature then I'm willing to take this on as my a first contrib to this repo. Looking around ADG code the core change will be dnsproxy.

I think it would be a great feature 😀

[dontcrash]

@ainar-g If this seems like a reasonable feature then I'm willing to take this on as my a first contrib to this repo. Looking around ADG code the core change will be dnsproxy.

Did you end up doing any work on dnsproxy for this one?

I believe this PR is all that is required on dnsproxy AdguardTeam/dnsproxy#467

Just submitted a PR for the AdGuardHome part here #7950