support sending upnp events

MediaBrowser.Controller/Dlna/EventSubscriptionResponse.cs

@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+
+namespace MediaBrowser.Controller.Dlna
+{
+    public class EventSubscriptionResponse
+    {
+        public string Content { get; set; }
+        public string ContentType { get; set; }
+
+        public Dictionary<string, string> Headers { get; set; }
+
+        public EventSubscriptionResponse()
+        {
+            Headers = new Dictionary<string, string>();
+        }
+    }
+}