Allow saved queries to be opened via quick-open panel

It would be great if the quick-open panel (the one you get when you press Cmd-P) supported opening saved queries. I often want to quickly switch between a table and saved query, and this panel is great for going one way but it can't take me in the other direction.

A fuzzy search on the filename would work really well I think. There would be no need to search the contents of the query files.

Start with the Cmd-P quick-open panel and the saved-query handling described in the issue. Trace how the panel searches and opens tables, then determine where saved-query filenames enter that flow. Done means a fuzzy filename search can find and open saved queries without searching their contents.

Written by the indexing model from the issue text.