Feature: #110873 - Paste files into the Media module 

Description 

Files can now be uploaded to the folder shown in the Media module by pasting them from the clipboard, in addition to dragging them onto the module or choosing them with the upload button.

This covers files copied in the file manager of the operating system as well as image data, such as a screenshot taken to the clipboard. A pasted file runs through the same upload as a dropped one, including the dialog asking what to do with a file that already exists in the folder.

Pasting into a form field of the module, such as the search field, keeps its usual behaviour and does not upload anything.

Impact 

Files can be uploaded in the Media module with Cmd+V or Ctrl+V without dragging them from another window.