[query execution] Add a way to visualize query results

[igorlfs]

Hello,

Once I found out there was a query execution feature, I was eager to use it with neovim. However, my first attempt did not go very well: upon triggering the code action, I noticed it was labeled as "disabled", which lead me to believe this was a feature was "exclusive" to VSC (i.e., I thought it would require client side handling).

Revisiting this matter today, I realized that after setting up allow_statement_executions_against I can indeed run queries from neovim. My next step was trying to implement a way to visualize the query results. And, after some tinkering, it seems that query results are not available at all on the client side? I even checked VSC, which I assumed always had this feature, and, to my surprise, it wasn't there either.

From my limited experience, it seems that dealing with query results could be a considerable undertaking (e.g., handling display, pagination, etc), and I completely understand if that's not planned. However, I couldn't find a similar request anywhere else (might not be using the "correct" terminology, idk), so I decided to create this feature request!