Custom view components for Entity meta

[anncatton]

Create custom view components for entity Content (meta, child resources, panel header controls) that will switch views based on resource type. There are many display components that can be reused as needed for the entity content.

• this will remove the need for all the conditional checks etc inside individual display components.
• The Content Panel will instead switch between a UserPanel / GroupPanel / ApplicationPanel / PolicyPanel
• Reuse existing generic components. Reorganize into folders for each entity + generic component files
• setup components for meta info only
• investigate if a Storybook setup might help here, to avoid involving EntityContext at this stage