General improvements (v5)

[arthur-er]

What would you like to be added:

• Queues should be registered on provider boot method, instead of register method.
  This allows using other packages without needing to fight the package import order

• Implement jobs as a abstract class instead of a interface
  This allows for many things, for example:

  • Possibility of using static key instead of needing to instantiate the job for dispatching via the manager
  • Removing the need for explicit job key (with the possibility of declaring one on the derived class if needed)
  • Possibility of automatic job discovery (by listing files and importing all the ones that prototype are instances of the base job)
  • Fluent interface for defining job options (delay, id, repeat, priority, lifo and parent) and dispatching the job

• Receive queue/queue key array as a parameter for listen command (or possibility of loading a custom jobs declaration file)
  This allows running queues of higher priority on different machines

Is your enhancement request related to a problem? Please describe.

Only the provider boot method causes problems, the rest is only for quality of life

---

I'm willing to work on this if aproved