Feature Request: Add uploaded images to exported user files

When I create an export of my user files I will only get a zipped folder with my *.md-files. But I was expecting to also get the uploaded images that are linked in the*.md-files, at least these on the server itself.
Without checking the code it seems to me that there is no owner table used to protect the images from accessing them. In fact with the URL I can also see the pictures without even being logged in. See: https://github.com/hackmdio/codimd/issues/1601

Start by tracing the user-file export flow and the handling of uploaded-image URLs; no files or tests are identified in the issue. Verify that exported archives include linked images stored on the server, while also determining the intended access-control behavior for those images, including unauthenticated requests.

Scritto dal modello di indicizzazione a partire dal testo della issue.