Proxy all Nuxt API requests

[obulat]

Fixes

Fixes #3473 by @sarayourfriend

Description

This PR uses a Nuxt server route to proxy all of the API requests.

This means that all of the requests from Nuxt will be using the correct user-agent, not only the initial server requests.

TODO:
Figure out the error types now that we've moved away from axios to ofetch (already used by Nuxt internally)

Testing Instructions

Checklist

• My pull request has a descriptive title (not a vague title likeUpdate index.md).
• My pull request targets the default branch of the repository (main) or a parent feature branch.
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.
• I ran the DAG documentation generator (if applicable).

Developer Certificate of Origin

Developer Certificate of Origin

Developer Certificate of Origin
Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
1 Letterman Drive
Suite D4700
San Francisco, CA, 94129

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.


Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified
    it.

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

[github-actions]

Playwright failure test results: https://github.com/WordPress/openverse/actions/runs/7570607952

It looks like some of the Playwright tests failed. You can download the trace output and image diffs for the failed tests under the "Artifacts" section in the above page.

You can read the docs on how to use this artifact.

If the test is flaky, follow the flaky test triage procedure.

[obulat]

Closing this PR because I merged these changes into update/nust3-Jan5