Support for SVG Image Field

Thanks for opening this. I’ll begin on it shortly. The approach will likely be updating the code to hook the file widget instead of image widget but, can stay pretty narrow by targeting the alt field. Will share an update once I’ve made progress.

Thanks again for calling this out.
I've made progress and have drafted a pull request but it'll likely be next week before I finishing testing and updates to go with it.
PR: https://git.drupalcode.org/project/decorative_images/-/merge_requests/