Docs: add example to API routes on accessing cookies

[brandonroberts]

Which scope/s are relevant/related to the feature request?

Docs

Information

We added support for accessing the request event here. The PR has an example of how to access cookies in the server request.

#614

This example should be added to the docs in the API routes overview page.

https://github.com/analogjs/analog/blob/main/apps/docs-app/docs/features/api/overview.md

Describe any alternatives/workarounds you're currently using

No response

I would be willing to submit a PR to fix this issue

• Yes
• No

[santoshyadavdev]

I will work on it