This PR removes storybook and adds docfy and uses docfy to render our existing README files.
This now means we can keep adding README documentation without committing any specific format or framework. If we eventually move to storybook then fine, or if we just want to remove docfy for whatever reason then fine - we will still have a full set of README files viewable via GitHub.
* Switch upstream-instances to use new style of searchable
* Add search action to DataCollection plus basic README
* Use DataCollection for PowerSelect searching in child-selectors
* Remove old style filterable search for role/policies and instances
* Remove old helpers/components related to search/sort/filter