Use SubtitleEdit to parse subtitles

MediaBrowser.Model/MediaInfo/SubtitleTrackEvent.cs

@@ -1,10 +1,15 @@
-#nullable disable
 #pragma warning disable CS1591
 
 namespace MediaBrowser.Model.MediaInfo
 {
     public class SubtitleTrackEvent
     {
+        public SubtitleTrackEvent(string id, string text)
+        {
+            Id = id;
+            Text = text;
+        }
+
         public string Id { get; set; }
 
         public string Text { get; set; }

MediaBrowser.Model/MediaInfo/SubtitleTrackInfo.cs

@@ -1,3 +1,4 @@
+#nullable enable
 #pragma warning disable CS1591
 
 using System;