Add regexp support for $domain modifier

[slavaleleka]

@slavaleleka commented on Thu Nov 11 2021

now there is no chance to create single cosmetic rule for hiding the same element on such domains:
example1.com, example2.com, example3.org

it would be nice if $domain modifier supports regular expressions, just like $path does

something like this:
[$domain=/example[0-9]\.(com|org)/]##.ad

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@ameshkov commented on Fri Nov 12 2021

Why limit just to the cosmetic rules? If we do it here, we should extend it to basic rules as well.

[ameshkov]

But let's wait until the CL guys come up with a proper syntax spec.
AdguardTeam/CoreLibs#1550