Upgraded Protobuf, and added api support for it

MediaBrowser.Model/DTO/IBNItem.cs

@@ -1,48 +1,65 @@
-using MediaBrowser.Model.Entities;
-using System;
+using System;
+using ProtoBuf;
 
 namespace MediaBrowser.Model.DTO
 {
     /// <summary>
     /// This is a stub class used by the api to get IBN types along with their item counts
     /// </summary>
+    [ProtoContract]
     public class IBNItem
     {
         /// <summary>
         /// The name of the person, genre, etc
         /// </summary>
+        [ProtoMember(1)]
         public string Name { get; set; }
 
         /// <summary>
         /// The id of the person, genre, etc
         /// </summary>
+        [ProtoMember(2)]
         public Guid Id { get; set; }
 
+        [ProtoMember(3)]
         public bool HasImage { get; set; }
 
         /// <summary>
         /// The number of items that have the genre, year, studio, etc
         /// </summary>
+        [ProtoMember(4)]
         public int BaseItemCount { get; set; }
     }
 
     /// <summary>
     /// This is used by the api to get information about a Person within a BaseItem
     /// </summary>
+    [ProtoContract]
     public class BaseItemPerson
     {
+        [ProtoMember(1)]
         public string Name { get; set; }
+
+        [ProtoMember(2)]
         public string Overview { get; set; }
+
+        [ProtoMember(3)]
         public string Type { get; set; }
+
+        [ProtoMember(4)]
         public bool HasImage { get; set; }
     }
 
     /// <summary>
     /// This is used by the api to get information about a studio within a BaseItem
     /// </summary>
+    [ProtoContract]
     public class BaseItemStudio
     {
+        [ProtoMember(1)]
         public string Name { get; set; }
+
+        [ProtoMember(2)]
         public bool HasImage { get; set; }
     }
 }