OOTB support for Pub/Sub and background jobs

[BilalHasanKhan]

OOTB support for Pub/Sub so as to delegate chained updates/actions. Background tasks to perform certain needed activities.

[joshuaalpuerto]

Hey @BilalHasanKhan, I'm not sure about this because not all project needs it.

Thoughts?

[BilalHasanKhan]

@joshuaalpuerto I think any medium to large project (at times even small ones) would need sending emails and other kind of notifications which can be delegated via event chain. Similarly, synchronized background jobs are needed for recomputing data points for reports etc when data is consistently getting added/updated.

[joshuaalpuerto]

Hmm, I implemented kue on my production project(using this boilerplate), w/c will have two addition the QueueManager sitting on application layer that has 1 to 1 mapping into QueueService -> <kue|bull> under infrastructure.

The implementation is trivial so if you want to create a PR, I'm glad to review it. :)

[BilalHasanKhan]

Sure I can come up with the implementation by end of next week but I was thinking more on the lines of this repository.
https://github.com/santiq/bulletproof-nodejs

[Sofyrus]

#67 adds support for bull and event listeners