Add progress and complettion indication

Jellyfin.Plugin.Jellypod/Api/Models/PlaybackProgressRequest.cs

@@ -0,0 +1,12 @@
+namespace Jellyfin.Plugin.Jellypod.Api.Models;
+
+/// <summary>
+/// Request to update playback progress.
+/// </summary>
+public class PlaybackProgressRequest
+{
+    /// <summary>
+    /// Gets or sets the playback position in ticks.
+    /// </summary>
+    public long PositionTicks { get; set; }
+}

Jellyfin.Plugin.Jellypod/Api/Models/PlaybackProgressResponse.cs

@@ -0,0 +1,29 @@
+using System;
+
+namespace Jellyfin.Plugin.Jellypod.Api.Models;
+
+/// <summary>
+/// Response containing playback progress info.
+/// </summary>
+public class PlaybackProgressResponse
+{
+    /// <summary>
+    /// Gets or sets the playback position in ticks.
+    /// </summary>
+    public long PositionTicks { get; set; }
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the episode has been played.
+    /// </summary>
+    public bool IsPlayed { get; set; }
+
+    /// <summary>
+    /// Gets or sets the date the episode was last played.
+    /// </summary>
+    public DateTime? LastPlayedDate { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of times the episode has been played.
+    /// </summary>
+    public int PlayCount { get; set; }
+}