Mark some classes and methods obsolete for version 1.1.0 (#335)

* Obsolete

* StandAloneApp - obsolete

* obs

* make Interface obsolete

src/WireMock.Net/Settings/IProxyAndRecordSettings.cs

@@ -1,10 +1,13 @@
-using JetBrains.Annotations;
+using System;
+
+using JetBrains.Annotations;
 
 namespace WireMock.Settings
 {
     /// <summary>
     /// IProxyAndRecordSettings
     /// </summary>
+    [Obsolete("This interface will be removed and replaced by the class ProxyAndRecordSettings in version 1.1.0")]
     public interface IProxyAndRecordSettings
     {
         /// <summary>