Make books resumable and have duration of 1 second

Emby.Server.Implementations/Library/UserDataManager.cs

@@ -240,7 +240,7 @@ namespace Emby.Server.Implementations.Library
                 {
                     // Enforce MinResumeDuration
                     var durationSeconds = TimeSpan.FromTicks(runtimeTicks).TotalSeconds;
-                    if (durationSeconds < _config.Configuration.MinResumeDurationSeconds)
+                    if (durationSeconds < _config.Configuration.MinResumeDurationSeconds && !(item is Book))
                     {
                         positionTicks = 0;
                         data.Played = playedToCompletion = true;

MediaBrowser.Controller/Entities/Book.cs

@@ -11,6 +11,10 @@ namespace MediaBrowser.Controller.Entities
         [JsonIgnore]
         public override string MediaType => Model.Entities.MediaType.Book;
 
+        public override bool SupportsPlayedStatus => true;
+
+        public override bool SupportsPositionTicksResume => true;
+
         [JsonIgnore]
         public string SeriesPresentationUniqueKey { get; set; }
 
@@ -20,6 +24,11 @@ namespace MediaBrowser.Controller.Entities
         [JsonIgnore]
         public Guid SeriesId { get; set; }
 
+        public Book()
+        {
+            this.RunTimeTicks = TimeSpan.TicksPerSecond;
+        }
+
         public string FindSeriesSortName()
         {
             return SeriesName;