[FEAT]: WebStandard Middleware

[akku1139]

Describe the need

Currently, octokit only supports creating middleware for Node.js ,
but there are times when I want to use octokit in an environment other than Node.js .
This is not a big problem with runtimes that are compatible with Node.js, such as Deno and Bun,
Edge runtimes such as Cloudflare Workers may not offer Node.js compatibility.
Therefore, it is necessary to provide Middleware that uses WebStandard API (Request/Response).

SDK Version

No response

API Version

No response

Relevant log output

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

👋 Hi! Thank you for this contribution! Just to let you know, our GitHub SDK team does a round of issue and PR reviews twice a week, every Monday and Friday! We have a process in place for prioritizing and responding to your input. Because you are a part of this community please feel free to comment, add to, or pick up any issues/PRs that are labeled with Status: Up for grabs. You & others like you are the reason all of this works! So thank you & happy coding! 🚀

[wolfy1339]

I created this middleware, https:/octokit/webhooks.js/compare/web-middleware

[akku1139]

app.js and oauth-app.js also need to be supported in the same way.

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It was already supported in oauth-app.js

https:/octokit/oauth-app.js/blob/main/src/middleware/web-worker/index.ts