Refactored ScanLibrary to produce page numbers on the Manga File, Format and to update existing series/volumes rather than always create new entries.

API/Entities/Volume.cs

@@ -13,6 +13,9 @@ namespace API.Entities
         public DateTime Created { get; set; }
         public DateTime LastModified { get; set; }
         public byte[] CoverImage { get; set; }
+        
+        // public string CachePath {get; set;} // Path where cache is located. Default null, resets to null on deletion.
+        //public ICollection<AppUserProgress> AppUserProgress { get; set; }
 
         // Many-to-One relationships
         public Series Series { get; set; }