EntityPicker Proof of Concept

[iethree]

Before we go too far down the road, we want to prove out our ability to provide a generic picker UI component that can build its own picker tree from callbacks

• create ugly/basic entity picker ui component
• create basic generic picker wrapper (with callbacks that return static data)
• create basic table picker wrapper
• create basic question picker wrapper

[iethree]

this has been superseded by #35564