Add a way to add comments

report from Kirk:

Could I ask for a 3rd TEXT field? Details about about the tables involved in the query! so, in the telegram group, we often have to pull teeth to remind people to give us their TABLE structures (\d ...) It would be AWESOME if you had a spot for this. It could be for various other comments AND the structure... Usually I am forced to put it as comments under the query, but that makes that field noisy...