Update to 3.5.2 and .net core 2.1

Emby.Server.Implementations/Library/ExclusiveLiveStream.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Dto;
+using MediaBrowser.Controller.Library;
+
+namespace Emby.Server.Implementations.Library
+{
+    public class ExclusiveLiveStream : ILiveStream
+    {
+        public int ConsumerCount { get; set; }
+        public string OriginalStreamId { get; set; }
+
+        public string TunerHostId => null;
+
+        public bool EnableStreamSharing { get; set; }
+        public MediaSourceInfo MediaSource { get; set; }
+
+        public string UniqueId { get; private set; }
+
+        private Func<Task> _closeFn;
+
+        public ExclusiveLiveStream(MediaSourceInfo mediaSource, Func<Task> closeFn)
+        {
+            MediaSource = mediaSource;
+            EnableStreamSharing = false;
+            _closeFn = closeFn;
+            ConsumerCount = 1;
+            UniqueId = Guid.NewGuid().ToString("N");
+        }
+
+        public Task Close()
+        {
+            return _closeFn();
+        }
+
+        public Task Open(CancellationToken openCancellationToken)
+        {
+            return Task.CompletedTask;
+        }
+    }
+}