Add a Button to Make This an Optional Feature

Problem/Motivation

Currently if one uses this module, the alt text is auto-applied to the field. The user can edit the alt text afterwards, but that still requires work on the users part.

Proposed resolution

Is it possible to add a button to apply the suggestive alt text, similar to the Wordpress plugin? This way, the user would have the option to use their own alt text or the suggestive alt text.