[ES|QL] Supports date_nanos in bucket

[stratoula]

Summary

Supports date_nanos in BUCKET. (Fixes this #192255 (comment))

Create a date_nanos field like here https://www.elastic.co/guide/en/elasticsearch/reference/current/date_nanos.html
Test it with bucket

Checklist

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

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 495019f

Failed CI Steps

• Jest Tests #18

Test Failures

• [job] [logs] Jest Tests #18 / UserToolTip renders the tooltip when hovering

Metrics [docs]

Async chunks

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

id	before	after	diff
esql	239.1KB	238.8KB	-336.0B

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	3.6MB	3.6MB	-8.0B

[elasticmachine]

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