Basic wiring with Kavita+ for CBR implemented. Metadata writing needs to be hooked up.

API/DTOs/Scrobbling/PlusSeriesDto.cs

@@ -9,6 +9,10 @@ public record PlusSeriesRequestDto
     public long? MalId { get; set; }
     public string? GoogleBooksId { get; set; }
     public string? MangaDexId { get; set; }
+    /// <summary>
+    /// ComicBookRoundup Id
+    /// </summary>
+    public int? CbrId { get; set; }
     public string SeriesName { get; set; }
     public string? AltSeriesName { get; set; }
     public PlusMediaFormat MediaFormat { get; set; }