Can only add images to folder in IOS app

In the IOS app, you can only add photos to folders. When will there be the ability to add more file types?

Start by reviewing the iOS app's folder and photo-add flow, then identify where supported file types are defined. Clarify which additional file types should be supported and whether the behavior must match other clients; done means those agreed types can be added to folders and the behavior is covered by appropriate validation.

Written by the indexing model from the issue text.