Vertical Scrollable List Component

[nanodeath]

Subtask of #25.

Is your feature request related to a problem? Please describe.
If we have a list (textbox?) that contains too many elements, there's no good way to show more content; current option is to just trim down on the size of the text.

Describe the solution you'd like
A component or fragment that you can provide a list of things to display and it'll render it, and if there's too much to show, a scrollbar can be used to "pan" through all the text. The scrollbar should be fully featured, e.g. supporting keyboard and mouse events.

Describe alternatives you've considered
You could also have a [More] or [Next page] button for navigating through "pages" of text, but that's likely better suited to narrative content, not lists of items.

Additional context
Add any other context or screenshots about the feature request here.

[nanodeath]

I'll have a PR for this shortly.