Support for nuxt 3

[davireis]

Is your feature request related to a problem? Please describe.

Currently, there is no easy path for integrating with nuxt 3, particularly as a server.

Describe the solution you'd like

I would like a nuxt 3 plugin that requires close to zero configuration and runs a buf-connect in a similar fashion that today /api/ serves http2.

Please specify whether the request is for Connect for Web or Connect for
Node.js.

Connect for node.js.

Describe alternatives you've considered

Although nuxt 3 uses nitro as the server, it seems that the existing UniversalRequestFromNode* methods would work out almost out the box.