Implement JF->TA watched status synchronization

Jellyfin.Plugin.TubeArchivistMetadata/TubeArchivist/Additional/Watched.cs

@@ -0,0 +1,33 @@
+using Newtonsoft.Json;
+
+namespace Jellyfin.Plugin.TubeArchivistMetadata.TubeArchivist
+{
+    /// <summary>
+    /// A class representing TubeArchivist API video watched status.
+    /// </summary>
+    public class Watched
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Watched"/> class.
+        /// </summary>
+        /// <param name="id">Id of the video/channel/playlist.</param>
+        /// <param name="isWatched">Watched status.</param>
+        public Watched(string id, bool isWatched)
+        {
+            Id = id;
+            IsWatched = isWatched;
+        }
+
+        /// <summary>
+        /// Gets the id of the video/channel/playlist.
+        /// </summary>
+        [JsonProperty(PropertyName = "id")]
+        public string Id { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether the item has been watched or not.
+        /// </summary>
+        [JsonProperty(PropertyName = "is_watched")]
+        public bool IsWatched { get; }
+    }
+}