Support Polygons in the Map Widget

### What is the problem or limitation you are having?

I work a lot with GIS data one of our primary GIS layers is a set of polygons that represent the footprint of the buildings on our campus. I would like to build an app that allows our staff to walk around campus and click on a building polygon in the map to start a number of processes.

### Describe the solution you'd like

Create a widget that consumes an array of x,y points for each feature, that is then represented as a shape in the map instead on a single point.

### Describe alternatives you've considered

I'm assuming it is probably possible to just pull the [ArcGIS API](https://developers.arcgis.com/python/) library and use their feature set to handle the display of maps.

### Additional context

_No response_

No repository file or test is named. Start by locating the existing map widget and its platform-specific implementations, then review how the proposed ArcGIS feature data could represent arrays of x,y points. Done means the widget can render polygon features and allow a user to select a building polygon to begin an app workflow.

Written by the indexing model from the issue text.