Pull request: 5035-netip-maps-access

Updates #5035.

Squashed commit of the following:

commit 0c9f80761419dc50d89e0e82f68cdb462569417d
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Oct 24 16:11:03 2022 +0300

    dnsforward: fix access check

commit df981acb4816cfba11bf6bbe4ef7796a6e365ea9
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Mon Oct 24 15:27:45 2022 +0300

    dnsforward: mv access to netip.Addr

internal/home/clients.go

@@ -25,6 +25,8 @@ import (
 	"golang.org/x/exp/slices"
 )
 
+//lint:file-ignore SA1019 TODO(a.garipov):  Replace [*netutil.IPMap].
+
 const clientsUpdatePeriod = 10 * time.Minute
 
 var webHandlersRegistered = false