Add `withCredentials` prop to provider

[ofek-frame]

Currently, should you want to show a PDF behind an authenticated path, you must fetch() it with crossOrigin: 'use-credentials', then create a blob for it.
While this works - it would be much easier if the library externalized some arguments (In this case, use credentials) of its internal fetch.

For comparison - react-pdf has it with the document option WithCredentials: true or httpHeaders

[david-reactpdf]

@ofek-frame

Thanks for raising this and for the detailed explanation

I can see how exposing something like withCredentials would simplify the setup for authenticated PDFs and avoid the need for manual fetch + blob handling. We’ll look into this internally and evaluate how best to expose these options.

Will update this thread once we have more details 👍