Write documentation explaining how to enable metrics

[andygrove]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
I would like to see metrics for a query and I don't remember how to do that so I looked in the documentation but could not find any references to metrics, other than in the changelog. I ran find . -name "*.md" -exec grep -Hi metrics {} \;.

Describe the solution you'd like
Documentation, preferably in the user guide, on how to enable metrics.

Describe alternatives you've considered
None

Additional context
None

[alamb]

This could perhaps start with showing EXPLAIN and then EXPLAIN ANALYZE to show the metrics and how to interpret them

[MayankJha014]

Can you assign this issue to me

[MayankJha014]

take

[alamb]

Perhaps you can start with https://datafusion.apache.org/user-guide/explain-usage.html#execution-counters-explain-analyze and extend anything needed

[alamb]

In other words, I think this ticket might just need to be closed as @devanbenz did it already

[alamb]

Thank you for your interest @MayankJha014