Frontend: Display a form to create annotation from the chart popover menu

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Summary

The user should be able to create annotations from the chart. #211419 handles displaying a popover menu when click on the chart.

This issue focuses on creating a popover form that creates an annotation. The form should take params listed in #205091 (comment 302202307)

Proposed design

Flow for adding an annotation (the actual form design missing, and will be worked on in #211645 (closed) )

Click to add annotation	Pop-up Menu	Hover

Annotation design