[Feature]: Create a component that allows drag and drop of dictionary items (components/html elements)

[janechu]

What package(s) should this feature be added to?

@microsoft/fast-tooling

Summary

This web component should trigger an "addLinkedData" data message to be sent when a component is drag and dropped to the <html-render> element on the canvas and other sub-components.

Requirements

• Allow dragging a component onto a preview iframe containing the <html-render> and sub components
• Update the navigation as the drag is hovering over various elements in the <html-render> component
• Allow the component to be dropped, which triggers a "addLinkedData" data message to be sent to update the data dictionary