Allow custom marshalling / unmarshalling of IRIs for admin URLs

[dkarlovi]

Description

Currently the client URLs get constructed from full IRIs which works, but it's kind of ugly.

It would be nice if the Hydra data provider allowed the user to marshall / unmarshall the IRI into a "nice" ID for the routing. It would mean the admin URL is not

https://localhost/admin#/greetings/%2Fgreetings%2F1/show

or

https://localhost/admin/greetings/%2Fgreetings%2F1/show

but could be:

https://localhost/admin/greetings/1/show

Example

  // What the PR would add to the factory options:
  dataProviderFactory({
      entrypoint: '/api',
      mercure: false,
      // New: transform @id before it becomes record.id
      normalizeId: (iri: string) => iri.split('/').pop(),
      // New: reconstruct fetch URL from the normalized id
      resolveItemUrl: (resource, id, entrypointUrl) =>
          new URL(`${entrypointUrl}/${resource}/${id}`),
  })

Rough idea and not great naming, but something like that would be nice.