Introduce helper to avoid redundant view refreshes

[rjrjr]

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Internally we have DisplayDataRendering and DisplayDataLayoutRunner, built around this simple interface:

interface DisplayDataRendering<D : Any> {
  val displayData: D
}

They work well, we should open source.

[rjrjr]

@steve-the-edwards @RBusarow if one of you are looking for a small win on the side, this one is pretty much a copy / paste chore, plus maybe updating some samples to take advantage.

In the meantime, I'm moving off the ui-1.0 blockers list.