Add migrations section (#8873)

[Naarcha-AWS]

• Add migrations section.

Signed-off-by: Archer [email protected]

• Add back upgrade pages. Make them less migration focused.

Signed-off-by: Archer [email protected]

• Add back in upgrade pages.

Signed-off-by: Archer [email protected]

• Remove upgrade section. Add redirects.

Signed-off-by: Archer [email protected]

• Update migration-console-commands-references.md

Signed-off-by: Naarcha-AWS [email protected]

• Implement doc review.

Signed-off-by: Archer [email protected]

• Fix getting started headers.

Signed-off-by: Archer [email protected]

• Fix parent child relationship for Deploying migration assistant

Signed-off-by: Archer [email protected]

• Update _migration-assistant/migration-phases/assessing-your-cluster-for-migration.md

Signed-off-by: Naarcha-AWS [email protected]

• Additional feedback

Signed-off-by: Archer [email protected]

• Add permalink for migration console

Signed-off-by: Archer [email protected]

• Add redirects for index pages.

Signed-off-by: Archer [email protected]

• Final edits.

Signed-off-by: Archer [email protected]

• Fix headings.

Signed-off-by: Archer [email protected]

• Add copy buttons.

Signed-off-by: Archer [email protected]

• Last copy button.

Signed-off-by: Archer [email protected]

---

Signed-off-by: Archer [email protected]
Signed-off-by: Naarcha-AWS [email protected]
(cherry picked from commit 8664051)

Description

Describe what this change achieves.

Issues Resolved

Closes #[insert issue number]

Version

List the OpenSearch version to which this PR applies, e.g. 2.14, 2.12--2.14, or all.

Frontend features

If you're submitting documentation for an OpenSearch Dashboards feature, add a video that shows how a user will interact with the UI step by step. A voiceover is optional.

Checklist

• By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and subject to the Developers Certificate of Origin.
  For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

Thank you for submitting your PR. The PR states are In progress (or Draft) -> Tech review -> Doc review -> Editorial review -> Merged.

Before you submit your PR for doc review, make sure the content is technically accurate. If you need help finding a tech reviewer, tag a maintainer.

When you're ready for doc review, tag the assignee of this PR. The doc reviewer may push edits to the PR directly or leave comments and editorial suggestions for you to address (let us know in a comment if you have a preference). The doc reviewer will arrange for an editorial review.