ActionText Reflection

Hello there,

I recently found myself trying to access an ActionText::Reflection the way I would use reflect_on_attachment, just to find out there is no such class.

Now I’ve been wondering if this is an intentional omission, or if you would think this is a valuable contribution?

@kaspth brought to my attention (thanks!) that ActiveStorage::Reflection was introduced in this PR: ActiveStorage reflection by kddnewton · Pull Request #33018 · rails/rails · GitHub

If you think it’s worth it, I could take a stab at it.