Apply HostfilesRegistry to "AdGuard for Windows"' and "AdGuard for Android"'s "DNS Filtering" modes

[DandelionSprout]

(None of the 2 issue forms were suited for this.)

I've been puzzled for a couple years now that the Filters section of HostlistsRegistry have not been applied to the two AdGuard versions in question, despite both of them also having optional DNS Filtering modes that are directly comparable to AdGuard Home's syntax support.

Would it be possible to get it in expedited track to implement those lists in the two softwares?

AdGuard for Windows screenshot:

AdGuard for Android screenshot:

This issue is somewhat similar to AdguardTeam/AdguardForWindows#4533, except the latter is going slower than I hoped it would. No such issue has been submitted to https://github.com/AdguardTeam/AdguardForAndroid/issues that I can tell.

I don't have the means to test "AdGuard for Mac", as Macs are both too slow and too costly.

[ameshkov]

We actually have something like that on the roadmap, but only after we implement a filters management library. It's under development and supposed to be used by all other products.