Create featured story widget that fetches multiple items

This is something that we are implementing in ECDtools using the following pull request: https://github.com/EclipseFdn/ecdtools.eclipse.org/pull/188

But it would be good to export that functionality to Hugo Theme so it can be reused on other sites.

Also while we are there, we would like to improve how we are implementing this. In ECDtools we are loading owl carousel, loading the items in and then reset owl. I would be better if we could load the items in the owl container and then initialize the carousel. https://github.com/EclipseFdn/ecdtools.eclipse.org/pull/188/files#r754299948