LibWebView+RequestSever: Wire up a validate-DNSSEC setting option to RS

Author: https://github.com/alimpfard
Commit: 4b5664f867
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4709
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibWebView/Options.h

@@ -56,10 +56,12 @@ struct SystemDNS { };
 struct DNSOverTLS {
     ByteString server_address;
     u16 port;
+    bool validate_dnssec_locally;
 };
 struct DNSOverUDP {
     ByteString server_address;
     u16 port;
+    bool validate_dnssec_locally;
 };
 
 using DNSSettings = Variant<SystemDNS, DNSOverTLS, DNSOverUDP>;