Story for popover placement

[bjarnef]

I think it would be useful to show a story of popover placement options.
https://uui.umbraco.com/?path=/docs/uui-popover--docs

Something similar to this examples:
https://atlassian.design/components/popup/examples

[bjarnef]

Seems I created this in the wrong repository.
@iOvergaard can be transfer this to UI library? 😊