[ES|QL] Support ES|QL paramters in function names

[vadimkibana]

Summary

Partially addresses #198251

• Improves for param node parsing inside function call nodes.
• Adds the new identifier node type.
• The function AST nodes now have operator property, which contains either a param or identifier node.

Checklist

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

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[elasticmachine]

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

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 5167b7a

Metrics [docs]

Public APIs missing exports

Total count of every type that is part of your API that should be exported but is not. This will cause broken links in the API documentation system. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats exports for more detailed information.

id	before	after	diff
@kbn/esql-ast	34	35	+1

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
kbnUiSharedDeps-srcJs	3.4MB	3.4MB	+339.0B

Unknown metric groups

API count

id	before	after	diff
@kbn/esql-ast	269	270	+1

History

• 💔 Build #247370 failed c487391
• 💔 Build #247359 failed 062c058