ProxySettings : Add logic to not save some requests depending on HttpMethods (#900)

* Add ExcludedHttpMethods to ProxySettings

* tst

* fix

* SaveMappingSettings

* .

src/WireMock.Net/Matchers/MatchScores.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 
 namespace WireMock.Matchers;