Add Port and Url property to WireMockServer (#740)

src/WireMock.Net.Abstractions/Server/IWireMockServer.cs

@@ -38,11 +38,21 @@ namespace WireMock.Server
         /// </summary>
         List<int> Ports { get; }
 
+        /// <summary>
+        /// Gets the first port.
+        /// </summary>
+        int Port { get; }
+
         /// <summary>
         /// Gets the urls.
         /// </summary>
         string[] Urls { get; }
 
+        /// <summary>
+        /// Gets the first url.
+        /// </summary>
+        string Url { get; }
+
         //ConcurrentDictionary<string, ScenarioState> Scenarios { get; }
 
         /// <summary>