Feature request: export psql-like pretty text (including query) that I can paste into Slack/email/etc

I end up taking a LOT of screenshots of Postico and pasting them into Slack. Usually the conversation goes: "something doesn't look right in the database. Look at the weirdness this query returns." Then I paste in a screenshot of the query editor and response from Postico. That's a pain because someone can't easily copy-paste my query, and the results are also not searchable.

On some occasions, I have tried to "roll my own" version of this feature request by copy-pasting the query out of the query editor as text then also "Copy Special > Copy with header" from the response. This works ok, and at least all of the text is there in a searchable way, but the formatting looks very ugly.

## Bad copy paste of image, but what I usually do:

## Better, but cumbersome and still doesn't look very nice:
```
SELECT 'postico should copy/paste like psql' AS my_request,
'wow great feature request idea' AS postico_response;

my_request postico_response
postico should copy/paste like psql wow great feature request idea
```

### What I am requesting
I can "Copy Special > Pretty Text" and get something like this on my clipboard that I can paste into Slack or email
```
SELECT 'postico should copy/paste like psql' AS my_request,
'wow great feature request idea' AS postico_response;

My Request | Postico Response
-------------------------------------+---------------------------------
postico should copy/paste like psql | wow great feature request idea
(1 row)
```

No files or tests are identified in the issue. Start by locating the query editor and response copy actions, then compare their current clipboard formats with the requested psql-like output. Done means a Pretty Text copy option includes the query and formatted results, including headers and row count, in pasteable plain text.

Written by the indexing model from the issue text.