ui: add on demand debug info to sql activity pages

**Is your feature request related to a problem? Please describe.**
On the SQL Activity page, we should add a way to retrieve on-demand information about the response in cases we need to help debug issues with sql activity.

**Describe the solution you'd like**
Example:

Users should be able to click something like this and have the debug info be copied to their clipboard.

This needs some design work on where to place this button and how it should look like.

WIP - https://github.com/cockroachdb/cockroach/pull/126161.

Jira issue: CRDB-39785