Allow viewing results from any query runs as CSV

[RasmusWL]

Is your feature request related to a problem? Please describe.
I sometime runs queries in the VS Code extension that are not alerts (@kind problem), but want to export them to CSV for further processing, but currently the View Results (CSV) (right click menu) does not work for those.

Describe the solution you'd like
To be able to view results for any query run as CSV

Describe alternatives you've considered
-

Additional context
I'm not sure how this will handle when multiple query predicates are in scope 🤷 I guess the extension could ask which one of them you wanted to export, but if there's an easy solution (that you can think of) to get all of them I guess that would be even better.

[smowton]

I'm not sure how this will handle when multiple query predicates are in scope

Perhaps this isn't a right-click from the query history but rather a button in the CodeQL Query Results pane?

[aeisenberg]

Is this just about viewing a cab file? Would a separate csv viewer extension be sufficient? Like this one: https://marketplace.visualstudio.com/items?itemName=GrapeCity.gc-excelviewer

[adityasharad]

Thanks! I believe we already have this tracked in #832, though this is a good reminder to work on it.