Add autoscrolling support

Autoscrolling job outputs is another shared functionality I've seen that would be nice to pull into this package in a generic way. Fortunately, the SANS/TOPAZ usages are pretty consistent right now, so it shouldn't be too annoying to switch to using something like this.

One nice thing to look into at the same time would be how we can make the scrolling smoother. Maybe polling is a better option if the developer doesn't have to manage the logic.