Support RETURNS TABLE for UDFs

[DingDLu]

ustomer uses UDFs and would like the resultset to be returned as a table and not as a list of tuples

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

Jira issue: CRDB-37298

[DrewKimball]

Dupe of #100226.