feat(openapi-fetch): Enable per request middleware

[Kauabunga]

Changes

This PR introduces request level middleware options enabling the same client level middleware feature to be applied per request. This fills the missing feature of the docs and the issue raised here #2005

How to Review

1. Ensure the new fetch options are typed correctly
2. Ensure the middleware priority makes sense (client > request)
3. Unit test coverage is appropriate. Tests focus on request and client middleware options. Most of the middleware logic is already covered.

Checklist

• Unit tests updated
• docs/ updated (if necessary)
• pnpm run update:examples run (only applicable for openapi-typescript)

[changeset-bot]

🦋 Changeset detected

Latest commit: 7f5ad65

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

This PR includes changesets to release 3 packages

Name	Type
openapi-fetch	Minor
openapi-react-query	Major
swr-openapi	Major

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[gzm0]

Nice! Thanks for taking the time to do this. In terms of functionality this looks good.

I've left some detailed comments mostly regarding readability.

[gzm0]

This can be merged, but there seems to be an issue with Netlify. I do not know how that subsystem works (and I don't have time to look at it right now). I have asked for help on the maintainer chat.

[gzm0]

Apologies, I have to walk back on this one.

It seems that middleware is really a more appropriate plural of middleware. Not middlewares:

https://english.stackexchange.com/a/257139

So... The original parameter name as it was in the docs and how you have built it first was correct. Could you revert to that? (the internal variable names are less important, we can always change them later, but we're bound to the interface).

Sorry 🙈 (on the upside, we can merge w/o netlfiy after the revert).

[Kauabunga]

No worries! Have rolled it back to using the original doc name middleware while keeping the test and variable name changes from ya feedback in.

Appreciate the quick reviews from you :)