[Onboarding] [Stack] Add Onboarding experience into Stack

[joemcelroy]

Summary

STILL IN PROGRESS

TODO

• FTR - solution navigation ftr - add test for index management
• FTR - fix the index management index list page test to navigate through the solution navigation to index management list page
• code - playground create index action needs to check if part of es solution navigation
• Unit - add unit for index management with the change for solution navigation
• Unit - Fix any failures in index management tests
• Fix FTR tests

These changes are only targeting 9.0.

Checklist

Check the PR satisfies following conditions.

Reviewers should verify this PR satisfies this list as well.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• 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.
• Flaky Test Runner was used on any tests changed
• The PR description includes the appropriate Release Notes section, and the correct release_note:* label is applied per the guidelines

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[elasticmachine]

⏳ Build in-progress, with failures

• Buildkite Build
• Commit: 1c028c8

Failed CI Steps

• Jest Tests #8
• FTR Configs #7
• FTR Configs #7

Test Failures

• [job] [logs] FTR Configs #7 / X-Pack Accessibility Tests - Group 1 Management index management indices indices with data index details index details - settings
• [job] [logs] FTR Configs #7 / X-Pack Accessibility Tests - Group 1 Management index management indices indices with data index details index details - settings

History

• 💔 Build #264571 failed 27da871
• 💔 Build #264495 failed 8a5eea6
• 💔 Build #264373 failed a6f3b8f
• 💔 Build #264349 failed 2a9efd9
• 💔 Build #264213 failed 735e3b5