Added OPML support

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

@@ -0,0 +1,22 @@
+namespace Jellyfin.Plugin.Jellypod.Api.Models;
+
+/// <summary>
+/// Details about a failed OPML feed import.
+/// </summary>
+public class OpmlImportError
+{
+    /// <summary>
+    /// Gets or sets the feed URL that failed.
+    /// </summary>
+    public string FeedUrl { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Gets or sets the feed title from OPML (if available).
+    /// </summary>
+    public string? Title { get; set; }
+
+    /// <summary>
+    /// Gets or sets the error message.
+    /// </summary>
+    public string Error { get; set; } = string.Empty;
+}

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

@@ -0,0 +1,12 @@
+namespace Jellyfin.Plugin.Jellypod.Api.Models;
+
+/// <summary>
+/// Request to import podcasts from an OPML URL.
+/// </summary>
+public class OpmlImportRequest
+{
+    /// <summary>
+    /// Gets or sets the URL to fetch OPML from.
+    /// </summary>
+    public string Url { get; set; } = string.Empty;
+}

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

@@ -0,0 +1,44 @@
+using System.Collections.ObjectModel;
+
+namespace Jellyfin.Plugin.Jellypod.Api.Models;
+
+/// <summary>
+/// Result of an OPML import operation.
+/// </summary>
+public class OpmlImportResult
+{
+    /// <summary>
+    /// Gets or sets the total number of feeds found in the OPML.
+    /// </summary>
+    public int TotalFeeds { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of feeds successfully imported.
+    /// </summary>
+    public int ImportedCount { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of feeds skipped (already subscribed).
+    /// </summary>
+    public int SkippedCount { get; set; }
+
+    /// <summary>
+    /// Gets or sets the number of feeds that failed to import.
+    /// </summary>
+    public int FailedCount { get; set; }
+
+    /// <summary>
+    /// Gets the list of imported podcast titles.
+    /// </summary>
+    public Collection<string> ImportedPodcasts { get; } = new();
+
+    /// <summary>
+    /// Gets the list of skipped feed URLs (already subscribed).
+    /// </summary>
+    public Collection<string> SkippedFeeds { get; } = new();
+
+    /// <summary>
+    /// Gets the list of failed imports with error details.
+    /// </summary>
+    public Collection<OpmlImportError> Errors { get; } = new();
+}