Support Footer For Dropdown

[mengtao82]

Feature Request

Would like to allow to show a customized control to show up under bottom of pop out dropdown menu.

Problem description

For people picker, we would like to show a customized button under people item list. We cannot directly add button as a dropdown item since we would like to show both no result message and the button.
Below is the screenshot

Proposed solution

Add a footer prop to allow pass in customized element or have a event such as beforeRender to allow to add element before showing the menu

MVP

N/A