[ML] @kbn/ml-common-types & @kbn/ml-server-schemas

[walterra]

Summary

Part of #237808 and #189755.
Related to #197967.

• This PR moves ML type definitions from the ML plugin (plugins/ml/common/types/*) to a new package @kbn/ml-common-types. This refactoring is part of a larger effort to remove loading async bundles on page loads.
• This means for solutions importing this code will now import from @kbn/ml-common-types/... instead of @kbn/ml-plugin/....
• Some barrel files/export (export * from ...) were removed and replaced with deep imports to reduce the risk of running into circular dependencies and bundle size explosion.
• Some consts (or our variants of enums with as const) were moved to this package to avoid future circular dependency risk regarding the upcoming @kbn/ml-common-constants package.
• Moves API schemas to a new ml-server-schemas package. This is a shared-server package, meaning that any common and public packages/plugins can import types from it, but no runtime code. It's convenient to expose types from the schemas, so I had to make ml-common-types depend on this new package.

Review hint for teams being triggered for code owners review: Sorry this touches a lot of files but code touched outside the scope of ML should be just updated imports.

Checklist

• This was checked for breaking HTTP API changes, and any breaking changes have been approved by the breaking-change committee. The release_note:breaking label should be applied in these situations.
• The PR description includes the appropriate Release Notes section, and the correct release_note:* label is applied per the guidelines
• Review the backport guidelines and apply applicable backport:* labels.

[macroscopeapp]

Scout Test Review: found 1 issue. See inline comments for details.

^{Share feedback in the #appex-qa channel.}

^{Posted via Macroscope — Scout Test Review}

[MadameSheema]

sec-eng-prod changes LGTM!

[tcalopes]

entity-analytics changes LGTM

[kibanamachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 0a0b16c

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
indexManagement	781	782	+1
ml	4229	4231	+2
securitySolution	9360	9364	+4
total			+7

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
ml	78	56	-22

Any counts in public APIs

Total count of every any typed public API. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats any for more detailed information.

id	before	after	diff
ml	3	1	-2

Async chunks

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

id	before	after	diff
ml	5.8MB	5.8MB	+5.3KB
securitySolution	12.0MB	12.0MB	+1.2KB
total			+6.5KB

Public APIs missing exports

Total count of every type that is part of your API that should be exported but is not. This will cause broken links in the API documentation system. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats exports for more detailed information.

id	before	after	diff
@kbn/ml-common-types	-	74	+74
ml	109	38	-71
total			+3

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
ml	90.6KB	88.6KB	-2.0KB
securitySolution	152.0KB	151.8KB	-132.0B
total			-2.1KB

Unknown metric groups

API count

id	before	after	diff
ml	165	88	-77

ESLint disabled line counts

id	before	after	diff
@kbn/ml-common-types	-	1	+1
ml	551	550	-1
total			-0

References to deprecated APIs

id	before	after	diff
@kbn/ml-common-types	-	2	+2
ml	56	54	-2
total			-0

Total ESLint disabled count

id	before	after	diff
@kbn/ml-common-types	-	1	+1
ml	554	553	-1
total			-0

Unreferenced deprecated APIs

id	before	after	diff
@kbn/ml-common-types	-	2	+2
ml	56	54	-2
total			-0

History

• 💛 Build #434016 was flaky fa41889

cc @walterra @rbrtj