Allow spill location to be set via feature actions

[adgiles]

Enhancement

A Feature action could be added to the widget to allow the input for the spill location to be set from existing features on the map. This will automatically open the widget if closed and set the spill location to the coordinates of the feature used:

https://developers.arcgis.com/web-appbuilder/guide/create-a-feature-action-in-your-widget.htm