[SLO] Add burn rate windows to SLO detail page

[simianhacker]

Summary

This PR adds a burn rate visualization to the overview tab of the SLO Detail page. This PR also includes a fix for fetching the index pattern fields hook; it uses the DataViews service to fetch the fields instead of the internal API.

All good

Degrading

EVERYTHING IS BURNING 🔥

Recovering in the dark

No data

[apmmachine]

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[elasticmachine]

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

[kdelemme]

This looks awesome!! Just a few comments, particularly I think we can leverage durationType in the schema to simplify a bit the service.

[kdelemme]

👍🏻 LGTM! Wish we can ship that in 8.9

[kdelemme]

💥

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: deef9e0

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
observability	435	439	+4

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/slo-schema	117	122	+5

Async chunks

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

id	before	after	diff
observability	1.0MB	1.0MB	+6.0KB

Unknown metric groups

API count

id	before	after	diff
@kbn/slo-schema	117	122	+5

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	13	15	+2
securitySolution	411	415	+4
total			+6

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	14	16	+2
securitySolution	494	498	+4
total			+6

History

• 💚 Build #136645 succeeded e532835
• 💚 Build #135741 succeeded 7315f63
• 💚 Build #135443 succeeded f2d056e
• 💔 Build #135409 failed f9bdd64

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