feat: pass through response headers on the server

[fago]

• fetchProxyHeaders option currently defaults to ['cookie'] - so by default a set authentication cookie is passed through see related

• https://github.com/drunomics/nuxtjs-drupal-ce/pull/127

• https://github.com/drunomics/lupus-nuxt-kickstart/pull/318/files

• https://axios.nuxtjs.org/options#proxyheaders (library which was used in nuxt2)

• we should to make sure we also pass through response headers to the client as needed / wanted. We probably want to introduce a new configuration option for that.

Use cases:

• cache-headers - allow passing through cachability
• Set-Cookie - pass through cookie when session is created

[fago]

https://github.com/drunomics/nuxtjs-drupal-ce/blob/2.x/src/runtime/composables/useDrupalCe.ts#L82

This is were the request is made. Response headers can be set by middleware: https://medium.com/@dev.frederic.fox/setting-response-headers-on-nuxt3-eaec3b54fc0e

I guess we could define a global server-only middleware that takes care of pass through of response headers: https://nuxt.com/docs/guide/directory-structure/middleware#ordering-global-middleware

But we need to make the the headers available somewhere. Could we make the whole response object available via our composable? Then our server middleware could respect a new setting and pass through a couple of configured response headers.

[fago]

that's implemented now.