Feature Request: Add expand/collapse toggle to the query tree panel to show more results in table summaries

[RandomFractals]

In order to create slimmer gifs for the Composer app with different datasets, I think it would be handy to have expand/collapse toggle in the query tree panel to show more of the rendered results, especially for queries that show table summaries with nested column outputs.

[tschomer]

I think the spirit of this idea is to be able to navigate long/wide results more easily than just scrolling. If so, we have some ideaes in this area we'll be looking at.