[ES|QL] Recognize transformational commands with ast parsing

[stratoula]

Summary

Closes #184139

It uses ast parsing to recognize if the query has a transformational command. Although I added metrics on the list it wont work for it until we support it on our ast system. I am just adding here proactively. Stats and keep should work as expected though

Checklist

• Unit or functional tests were updated or added to match the most common scenarios

[stratoula]

/ci

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: c7cd04d

Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
@kbn/esql-utils	50	52	+2

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
discover	810.5KB	810.6KB	+116.0B
unifiedHistogram	73.6KB	73.6KB	+68.0B
total			+184.0B

Unknown metric groups

API count

id	before	after	diff
@kbn/esql-utils	52	54	+2

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[elasticmachine]

Pinging @elastic/kibana-esql (Team:ESQL)

[vadimkibana]

Code review only, LGTM