Acceptance criteria:
AC1: Create a wp-cli script in the directory bin/.
AC2. This will add widgets to a sidebar, in order to test their AMP compatibility (see this script for reference).
AC2: Add an instance of every native WordPress widget.
AC3: The success message should simply ask the user to visit a page that has the sidebar. It doesn’t need to create a test page, like in create-embed-test-post.php.
AC4: Need to conduct a Discovery to determine all native WordPress sidebar widgets, and the support that exists for them today. Screenshot: https://d.pr/i/vBQaFt .
AC5: One story will be created as an outcome of the Discovery to address enhanced/added support for sidebar widgets.

Tasks

• Create script, like was done for embeds, that generates core widgets in all their relevant variations, to populate the first registered sidebar it the theme.