[Actionable Observability][Metric Threshold Rule] Add histogram support for avg, max, min, sum and percentiles

[simianhacker]

Summary

This PR add support for the histogram field type for the avg, max, min, sum, and percentile aggregations for the Metric Threshold Rule. This will enable users to create latency threshold alerts on the APM data specific to transaction names like the example below:

[elasticmachine]

Pinging @elastic/infra-monitoring-ui (Team:Infra Monitoring UI)

[elasticmachine]

Pinging @elastic/actionable-observability (Team: Actionable Observability)

[kdelemme]

LGTM, verified locally and everything seems to work as expected

[matschaffer]

@elasticmachine merge upstream

[matschaffer]

Seems like a really good sign that all we had to do was extended the types list. :)

I took a quick look at https://www.elastic.co/guide/en/elasticsearch/reference/current/histogram.html#histogram-uses to see if there were any other aggs, but looks like you've got it covered. LGTM!

[simianhacker]

@elasticmachine merge upstream

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 2eeafdf

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
infra	1.0MB	1.0MB	+72.0B

History

• 💚 Build #71546 succeeded 4516215
• 💚 Build #68503 succeeded 20f6aac

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@elasticmachine merge upstream

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Status	Branch	Result
✅	8.5

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