[Security Solution][POC] Bundle Security Solution OAS per domain

[maximpn]

Addresses: #183019

NOTE: We're not planning to merge this PR. This PR is part of a discussion with @lcawl, @jloleysens, and @lukeelmers on https://github.com/elastic/security-team/issues/9407 and the structure of API docs.

Summary

This PR implements Security Solution OAS per domain automatic bundling by including it into PR's build pipeline.

Result bundles are valid OAS and written into x-pack/plugins/security_solution/docs/openapi/ and ready to be consumed.

Important! This PR just demonstrates conceptual OAS bundles segregation by domains while doesn't focus on spotting these domains. A set of domaina will be decided at the next step after discussion with tech leads.

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)

[jbudz]

.buildkite

[kibana-ci]

💔 Build Failed

• Buildkite Build
• Commit: d6b24ba
• Interpreting CI Failures

Failed CI Steps

• FTR Configs #16
• FTR Configs #16

Test Failures

• [job] [logs] FTR Configs #16 / Agent policies fleet_agent_policies POST /api/fleet/agent_policies/_bulk_get should populate package_policies if called with ?full=true
• [job] [logs] FTR Configs #16 / Agent policies fleet_agent_policies POST /api/fleet/agent_policies/_bulk_get should populate package_policies if called with ?full=true

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
securitySolution	5473	5475	+2

Async chunks

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

id	before	after	diff
securitySolution	15.1MB	15.1MB	+6.3KB

History

• 💛 Build #209342 was flaky 2f68641
• 💔 Build #209301 failed 9e54829
• 💔 Build #209263 failed 37f2bae
• 💔 Build #208934 failed d45f9e9
• 💔 Build #208917 failed 34094ff

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

cc @maximpn

[banderror]

@maximpn Can we close this PR now that we've collected feedback?

[maximpn]

Closing this PR since it was only needed to drive a discussion, see decisions in #183019 (comment).