Merge back to web fetch

[sigma-andex]

Description of the change

PR to merge back rowtype-yoga/purescript-fetch-core to purescript-web/web-streams so we can then transfer it to purescript-contrib as purescript-js-fetch.

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Checklist:

• Added the change to the changelog's "Unreleased" section with a reference to this PR (e.g. "- Made a change (#0000)")
• Linked any existing issues or proposals that this pull request should close
• Updated or added relevant documentation
• Added a test for the contribution (if applicable)

[garyb]

There are a few mentions of rowtype-yoga and fetch-core in here still in the readme/bower/spago files.

I'd prefer if we dropped the Core part of the namespacing too, since we're calling this purescript-js-fetch. I realise that'll conflict with rowtype-yoga/purescript-fetch, but since that's a higher level/opinionated library I don't think it should get to take the basic namespace.

[sigma-andex]

I'd prefer if we dropped the Core part of the namespacing too, since we're calling this purescript-js-fetch. I realise that'll conflict with rowtype-yoga/purescript-fetch, but since that's a higher level/opinionated library I don't think it should get to take the basic namespace.

we could use JS.Fetch like we did with purescript-js-bigint and purescript-js-blob.

[garyb]

Sure, that works. I do feel like just Fetch would be the most ideal (like Promise), but since there are also examples of JS being included sometimes I guess it's fine either way. 😉

[sigma-andex]

Ok I created purescript-js-fetch with the changes and renaming to JS.Fetch.