KIC v2.9 docs

[pmalek]

Description

This PR merges KIC's 2.9 related docs.

WIP for now. Only here to preview the docs

Testing instructions

Netlify link:

Checklist

• Review label added
• PR pointed to correct branch

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[pmalek]

I've rebased on recent main

[pmalek]

2 more dead links

  {
    "page": "https://deploy-preview-5241--kongdocs.netlify.app/kubernetes-ingress-controller/2.4.x/references/gateway-api-support/",
    "source": "app/_src/kubernetes-ingress-controller/references/gateway-api-support.md",
    "text": "are not provisioned automatically",
    "target": "https://deploy-preview-5241--kongdocs.netlify.app/kubernetes-ingress-controller/2.4.x/concepts/gateway-api#gateway-management",
    "reason": "HTTP_404"
  },
  {
    "page": "https://deploy-preview-5241--kongdocs.netlify.app/kubernetes-ingress-controller/2.4.x/references/gateway-api-support/",
    "source": "app/_src/kubernetes-ingress-controller/references/gateway-api-support.md",
    "text": "only supports a single Gateway per GatewayClass",
    "target": "https://deploy-preview-5241--kongdocs.netlify.app/kubernetes-ingress-controller/2.4.x/concepts/gateway-api#listener-compatibility-and-handling-multiple-gateways",
    "reason": "HTTP_404"
  }

that will be solved by #5302

[rainest]

We have released 2.9 and this is now ready to merge AFAIK. There's nothing further to review here (other than just the final approval stamp) since it was all already reviewed via PRs to this branch correct?

Edit: forgot the final generated CRD file, but have now added that. Did the same for 2.8 since we forgot that. The 3 commits after this comment were merged directly to this branch without another team member review, but they're generated docs and links to them, so CI will catch any issues.