Add a "Replicate" button

[laryn]

If the Replicate Paragraphs module is installed perhaps it would be helpful to add a "Replicate" button on the Paragraphs item in the admin operations listings? (e.g. in edit mode and in the modal edit dropbuttons) One use case is obviously just to create multiple similar paragraphs, but if we add Scheduled paragraphs it would be very useful to be able to duplicate a Paragraph in unpublished form, modify, schedule it to publish (and schedule the original to unpublish).

It looks like D8 implmented a similar feature and called it "Duplicate Paragraph":

Note though this is only visible if the default paragraph edit mode is closed.

[laryn]

Possibility: merge replicate_paragraphs into this module as part of this? See backdrop-contrib/replicate#1