✈️ Better migration to new cloud files reference system

DysonNetwork.Sphere/Storage/CloudFile.cs

@@ -24,7 +24,7 @@ public class RemoteStorageConfig
 /// The class that used in jsonb columns which referenced the cloud file.
 /// The aim of this class is to store some properties that won't change to a file to reduce the database load.
 /// </summary>
-public class CloudFileReferenceObject : ICloudFile
+public class CloudFileReferenceObject : ModelBase, ICloudFile
 {
     public string Id { get; set; } = null!;
     public string Name { get; set; } = string.Empty;
@@ -75,6 +75,9 @@ public class CloudFile : ModelBase, ICloudFile, IIdentifiedResource
     {
         return new CloudFileReferenceObject
         {
+            CreatedAt = CreatedAt,
+            UpdatedAt = UpdatedAt,
+            DeletedAt = DeletedAt,
             Id = Id,
             Name = Name,
             FileMeta = FileMeta,