Create tutorial with sample data and queries

[jameskerr]

[philrz]

One of my ideas in this area has been to walk through the zq tutorial, but in Zui.

I recently went through the tutorial and saved each of the queries and then Exported the query folder as zq-Tutorial.json. They happen to be in reverse order at the moment due to a new issue I bumped into (#2920) but otherwise it felt like a successful exercise.