Limit file uploads to image types in image interface

[dsheiko]

As an admin I have PICTURE field of type image, interface image and view image.
I drag and drop a media (.mp4) file and the field accepts it.

Expected behavior: it shall block and warn the user the file type if wrong (restricted)

Project details
Directus Version: 9.0.0-rc.64
Environment: production
OS: Ubuntu 18.04.2 LTS
Node: 11.15.1

[azrikahar]

Opting to close this in favor of #11733 which encapsulates this feature!