added model classes for remote control

MediaBrowser.Model/Session/PlayRequest.cs

@@ -0,0 +1,46 @@
+
+namespace MediaBrowser.Model.Session
+{
+    /// <summary>
+    /// Class PlayRequest
+    /// </summary>
+    public class PlayRequest
+    {
+        /// <summary>
+        /// Gets or sets the item ids.
+        /// </summary>
+        /// <value>The item ids.</value>
+        public string[] ItemIds { get; set; }
+
+        /// <summary>
+        /// Gets or sets the start position ticks that the first item should be played at
+        /// </summary>
+        /// <value>The start position ticks.</value>
+        public long? StartPositionTicks { get; set; }
+
+        /// <summary>
+        /// Gets or sets the play command.
+        /// </summary>
+        /// <value>The play command.</value>
+        public PlayCommand PlayCommand { get; set; }
+    }
+
+    /// <summary>
+    /// Enum PlayCommand
+    /// </summary>
+    public enum PlayCommand
+    {
+        /// <summary>
+        /// The play now
+        /// </summary>
+        PlayNow,
+        /// <summary>
+        /// The play next
+        /// </summary>
+        PlayNext,
+        /// <summary>
+        /// The play last
+        /// </summary>
+        PlayLast
+    }
+}