Arvados » Arvados Workbench 2

When item is being shared there should be an option to send the notification to the target user

In order to start working on this we have to finish #19834

This functionality extend current sharing screen with additional checkbox to allow email notifications in case of new sharing operation. To provide best flexibility and reusage we should expose additional API endpoint that will allow to specify email recipients and message.

Things to consider:
- Should we allow the API endpoint to consume email contents along with the list of recipients or only list of recipients and email content should be predefined on the server side
- Should we allow to remove some users from the email notification process (not single checkbox but list of users instead)
- Is there more places where this functionality can be used and checkbox should be a separate component with its own logic