Special Grouping (#134)

* More cases for parsing regex

* Implemented a change to fix old special grouping. Added some TODOs as well for a future enhancement

API/DTOs/ChapterDto.cs

@@ -18,6 +18,10 @@ namespace API.DTOs
         /// </summary>
         public int Pages { get; init; }
         /// <summary>
+        /// If this Chapter contains files that could only be identified as Series or has Special Identifier from filename
+        /// </summary>
+        public bool IsSpecial { get; init; }
+        /// <summary>
         /// The files that represent this Chapter
         /// </summary>
         public ICollection<MangaFileDto> Files { get; init; }