[Feature Request] Make export accessible by wrapping manifest.json into a js file and adding a html document containing a static single-html document version of paperless that allows to access the documents metadata

Description I can imagine that a lot of people are running paperless-ngx for their private documents. Typically, in such a scenario there's no 2nd server running in parallel which can takeover operations when the main server fails. Furthermore, the local network is often not remotely accessible due to CGNAT. At least it's the case for me. Therefore, I think it would be a great feature to make the backup more accessible in case of error or as a mobile copy that can run without server. manifest.json holds all metadata anyway and would therefore allow tag filtering and text search. Wrapped in a js file would circumvent CORS restrictions with loading the metadata from a local html document. Eventually, displaying documents would not be possible, but links to the local documents would be sufficient in case of emergency. I would still be able to find all tax-related documents by tag in case the server fails the day before declaration deadline. From my experience, manifest.j…