Allow "drag and drop" to upload files

[ldeso]

Hi,

It would be nice to have the possibility to upload a file using the "drag and drop" action, by dropping a file on top on the area asking for the file.

(this is just an idea and Accrescent is already very nice to use now)

[lberrymage]

This is directly supported in the CDK as of Angular v19: https://blog.angular.dev/meet-angular-v19-7b29dfd05b84.

Documentation: https://material.angular.dev/cdk/drag-drop/overview.