feat: add new allowedHosts option

[ematipico]

Changes

Closes #13060

This PR adds a new allowedHosts and --allowed-hosts options.

This options isn't passed to the node adapter yet, we will have to figure out how to use it in the preview server.

Testing

I don't know how to test this functionality, help would be appreciated.

Docs

Will send a PR

[changeset-bot]

🦋 Changeset detected

Latest commit: d11d3e4

The changes in this PR will be included in the next version bump.

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[github-actions]

This PR is blocked because it contains a minor changeset. A reviewer will merge this at the next release if approved.

[codspeed-hq]

CodSpeed Performance Report

Merging #13278 will not alter performance

_{Comparing feat/add-allowed-hosts (d11d3e4) with main (509fa67)}

Summary

✅ 6 untouched benchmarks

[pkg-pr-new]

astro

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@astrojs/cloudflare

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@astrojs/netlify

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@astrojs/node

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@astrojs/vercel

npm i https://pkg.pr.new/@astrojs/vercel@13278

commit: 727c386

[florian-lefebvre]

I think my concern is that we are a bit conflicting with the vite option. What happens to it? Is it not used at all anymore? Should we warn if used?

[ArmandPhilippot]

LGTM, I just left some nit related to the doc.

[sarah11918]

Looks great here, just some small thoughts!

Fun fact, I literally just configured vite.server.allowHosts myself yesterday to allow my dev server to work in Gitpod 😄

Also noting that I didn't notice any new error messages added along with this feature.

Merge day