Is your feature request related to a problem? Please describe.
I have files on cloud:

• Before FileRefactor, a plugin would send a command to Rclone (CLI to manage cloud storage) to delete this file. This plugin is trigger when the file is delete so it was a Scene.Destroy.Post hook.
• Now, you can have multiple files, so Scene.Destroy.Post is not the only way to remove a file. If I delete a second file from the same scene, there is no hook to catch this operation.

Describe the solution you'd like
Adding:

• File.Destroy.Post (Trigger when Stash delete a file)
  I'm not sure if Create/Update is useful.