Add MatchOperator "Or", "And" and "Average" for patterns (#755)

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* RequestMessageMethodMatcherTests

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* fix tests

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src/WireMock.Net/Authentication/AzureADAuthenticationMatcher.cs

@@ -39,6 +39,8 @@ namespace WireMock.Authentication
             return new AnyOf<string, StringPattern>[0];
         }
 
+        public MatchOperator MatchOperator { get; } = MatchOperator.Or;
+
         public double IsMatch(string input)
         {
             var token = Regex.Replace(input, BearerPrefix, string.Empty, RegexOptions.IgnoreCase);