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

* wip

* ...

* .

* ...

* ...

* path

* url

* b

* t

* client

* .

* RequestMessageMethodMatcherTests

* .

* h

* .

* fix tests

* .

src/WireMock.Net/Http/HttpClientFactory2.cs

@@ -0,0 +1,24 @@
+using System.Net.Http;
+
+namespace WireMock.Http;
+
+internal static class HttpClientFactory2
+{
+    public static HttpClient Create(params DelegatingHandler[] handlers)
+    {
+#if NETSTANDARD1_3
+        return new HttpClient();
+#else
+        return HttpClientFactory.Create(handlers);
+#endif
+    }
+
+    public static HttpClient Create(HttpMessageHandler innerHandler, params DelegatingHandler[] handlers)
+    {
+#if NETSTANDARD1_3
+        return new HttpClient(innerHandler);
+#else
+        return HttpClientFactory.Create(innerHandler, handlers);
+#endif
+    }
+}