feat(dcgw): Managed cache AWS beta

[cloudjumpercat]

Description

Fixes #3083 #3928

TODO

• Make the following how tos:
  • AWS managed cache single control plane
  • AWS managed cache CPG
  • Azure managed cache single control plane
  • Azure managed cache CPG
• New add ons section on landing page with links to these, grouped by provider
• Next steps links on Azure and AWS how tos with links to these
• Does this influence our production readiness guide?
• Update index with these guide links

How to notes:

• CPG ones will need an explanation of how to configure the redis partial on each CP.
• All need an example of setting a plugin with the managed cache.
• Call out multi-region option even though we only are setting one.

Preview Links

https://deploy-preview-3975--kongdeveloper.netlify.app/dedicated-cloud-gateways/multi-region-aws-managed-cache/

Checklist

• Tested how-to docs. If not, note why here.
• All pages contain metadata.
• Any new docs link to existing docs.
• All autogenerated instructions render correctly (API, decK, Konnect, Kong Manager).
• Style guide (capitalized gateway entities, placeholder URLs) implemented correctly.
• Every page has a description entry in frontmatter.
• Add new pages to the product documentation index (if applicable).

[netlify]

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