Documentation for after upload file processing using workers

[jankapunkt]

I have a suggestion / documentation is missing something

The current image processing example contains code that runs in a single thread.

Reality is that such processing often requires heavy resources and I would like to work on an example that uses Worker threads.
However I am not sure what might be the better approach, using the plain node implementation or a library for that? I have no experience on both so I am asking if you @dr-dimitru or anyone else can point me in a direction.

If I come up with a good solution I will contribute back into the docs.

Why not fibers?

I think in the long run they will drop fibers (as the current discussions in the Meteor repo show) so I think we might be best using Worker threads.