feat: add Response.json static method

[mcansh]

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https://github.com/remix-run/remix/discussions/3308

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confirmed working with npm link and importing Response from @remix-run/web-fetch

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Latest commit: 7c9a52518b261e47dec483201c8bd985f3f4420b

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

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@remix-run/web-fetch	Patch

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[kettanaito]

As far as I know, there's no Response.json static method on the Fetch API Response class. If this is a convenience feature, I'd highly encourage you not to add it to the Response class directly.

I'm solving a similar convenience issue in MSW, and you can draw some inspiration from there.

[mcansh]

it's in the spec and implemented in chrome, so it really just makes our polyfill closer to the spec

[kettanaito]

@mcansh, a good point, I must've been using a really old version of Chrome so it didn't show up when I checked this. Thanks for correcting me!