feat(node): convert to new adapter api

[florian-lefebvre]

Todo

• code
• tests
• test webHandler (hono)
• todos
• new tests?
• changesets
  • major: mode standalone
  • major: mode middleware
  • minor: web handler
  • minor: node preview server and isPreview()
• docs
  • node docs
  • migration guide like cloudflare
  • may need linking in v6 docs?
• pr desc
  • migration path
  • more powerful
  • cleaner for our internal tests
  • astro preview support

Changes

• What does this change?
• Be short and concise. Bullet points can help!
• Before/after screenshots can help as well.
• Don't forget a changeset! Run pnpm changeset.
• See https://contribute.docs.astro.build/docs-for-code-changes/changesets/ for more info on writing changesets.

Testing

Docs

[changeset-bot]

⚠️ No Changeset found

Latest commit: 1ce9dec

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[codspeed-hq]

Merging this PR will improve performance by 32.96%

⚡ 1 improved benchmark
✅ 8 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	Rendering: streaming [false], .md file	1.5 ms	1.1 ms	+32.96%

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_{Comparing feat/convert-node-adapter-to-new-api (1ce9dec) with main (7be3308)}