Added an ApiInteraction project that UI's can use to talk to the server. Moved jsonserializer namespace from json to serialization, since we may be adding an xml serializer.

MediaBrowser.ApiInteraction/BaseClient.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Net.Http;
+
+namespace MediaBrowser.ApiInteraction
+{
+    /// <summary>
+    /// Provides a base class used by the api and image services
+    /// </summary>
+    public abstract class BaseClient : IDisposable
+    {
+        public string ApiUrl { get; set; }
+
+        protected HttpClient HttpClient { get; private set; }
+
+        public BaseClient()
+        {
+            HttpClient = new HttpClient();
+        }
+
+        public void Dispose()
+        {
+            HttpClient.Dispose();
+        }
+    }
+}