[Serverless] #7099 Move install prepackaged timelines schema

[lgestc]

Summary

This PR moves the last remaining timeline api schema to a common location as per https://github.com/elastic/security-team/issues/7099

Checklist

Delete any items that are not applicable to this PR.

• 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

[michaelolo24]

I wonder if it's better to rename it to checkPrepackagedTimelines or checkImportTimelines or something a little bit more specific.

[michaelolo24]

Thanks for making this change so quickly!

[banderror]

@elasticmachine merge upstream

[banderror]

Rule Management changes LGTM, thanks @lgestc 👍

The only change relevant to us was in the x-pack/plugins/security_solution/server/lib/detection_engine/prebuilt_rules/api/get_prebuilt_rules_and_timelines_status/get_prebuilt_rules_and_timelines_status_route.ts file. However, in the GH UI it was showing me 3 files (out of 5 files changed in this PR) that I was supposed to own: Only files owned by you (3). Running node ./code-owners.js 162314 showed this:

## Files by Code Owner

### elastic/security-detection-rule-management

* x-pack/plugins/security_solution/server/lib/detection_engine/prebuilt_rules/api/get_prebuilt_rules_and_timelines_status/get_prebuilt_rules_and_timelines_status_route.ts

### elastic/security-solution

* x-pack/plugins/security_solution/common/api/timeline/index.ts
* x-pack/plugins/security_solution/common/api/timeline/install_prepackaged_timelines/install_prepackaged_timelines.ts
* x-pack/plugins/security_solution/server/lib/detection_engine/prebuilt_rules/api/get_prebuilt_rules_and_timelines_status/get_prebuilt_rules_and_timelines_status_route.ts
* x-pack/plugins/security_solution/server/lib/timeline/routes/prepackaged_timelines/install_prepackaged_timelines/index.ts
* x-pack/plugins/security_solution/server/lib/timeline/utils/check_timelines_status.ts

### elastic/security-threat-hunting-investigations

* x-pack/plugins/security_solution/server/lib/timeline/routes/prepackaged_timelines/install_prepackaged_timelines/index.ts
* x-pack/plugins/security_solution/server/lib/timeline/utils/check_timelines_status.ts

@lgestc @michaelolo24 Can we please update the CODEOWNERS file to assign the Investigations team to the x-pack/plugins/security_solution/common/api/timeline folder? I believe it's not assigned which can generate unnecessary code owner review requests.

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: eb5319a

Failed CI Steps

• Investigations - Security Solution Tests #3

Test Failures

• [job] [logs] Investigations - Security Solution Tests #3 / Alert details expandable flyout right panel overview tab insights section should display threat intelligence section should display threat intelligence section

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
securitySolution	4321	4322	+1

Async chunks

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

id	before	after	diff
securitySolution	15.6MB	15.6MB	+848.0B

History

• 💛 Build #144176 was flaky ffbeb74
• 💚 Build #143901 succeeded 1b69745
• 💔 Build #143834 failed 02e506e

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

cc @lgestc