data/sqlutil: (WIP) Add instrumented/cancellable FrameFromRowsWithContext #1278
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What this PR does / why we need it:
With SQL we have row limits, and to see those limits we need to instrument what we currently have.
Also, cell limits might be better and more informative, so collect that as well.
Finally, accept context, use that for labels in these metrics, and now that we have that can we can trace and cancel.
Special notes for your reviewer:
This is a first LLM pass, I haven't tried it yet