Add good real-world page examples

[ericsoderberghp]

Leverage work we've done for Financial Services, Positano, etc. to pick a couple of pages that we consider good examples of the design system. Strip them down if needed to remove anything we wouldn't recommend or that detracts from the UI-centric code. Create a new page under Templates called something like "Real Pages"? Populate it with these examples.

Part of the motivation for this is to help newcomers combine our page layouts with our rich component examples. In multiple conversations I've had with HPE teams, they have asked for something like this, to help them get started in a good direction.