Add duplicate Agent Button

[wrathagom]

I find myself creating copies to test something in agents and would love a duplicate button.

Maybe something like this, just with the copy icon?

And we could probably append "Copy" to the end of the agent's name or "Copy 1", "Copy 2" etc if there are already copies that exist. Or maybe a date so that it's always unique?

[wrathagom]

per Slack, we're going to prompt for the new agent's name.

[dcalvom]

@broham89 should we use the same copy icon here than for copy responses?

[broham89]

duplicate-icon.svg.zip @dcalvom here is a duplicate icon