[NEW] full PDF preview rendering in modal (browser), in window (app)

[alonelion1987]

Hello!

closes #13162

For more convenient viewing of pdf files in a frame in the browser and for viewing in a new window in a desktop application (Electron) using a special library (related https://github.com/RocketChat/Rocket.Chat.Electron/pull/1062 => as it should work along with it) with the ability to view all pages pdf, print, zoom and more

[rodrigok]

What happens for files stored at S3 or GS?

[alonelion1987]

What happens for files stored at S3 or GS?

I need help verifying these services. But in the code of these components, I did not find the set of the Content-Disposition header, but I can’t test it experimentally.