Better monitoring of recursive tasks progression

[Skrattoune]

Refering to issue #91,
I have implemented locally a few helpers which enable better monitoring of progression, especially useful in the case of recursive sub-tasks.

To document their usage, I have added functional example in https://github.com/boxine/django-huey-monitor/blob/master/huey_monitor_tests/test_app/tasks.py
Please have a look at the corresponding PR

[Skrattoune]

I didn't create any testing associated to those fonctions,
but I ensure that you can use the content of https://github.com/boxine/django-huey-monitor/blob/master/huey_monitor_tests/test_app/tasks.py for testing purposes as you do with the other examples

[Skrattoune]

Hi,
could you give me a feedback on this?
You can have a look at the use cas examples :
Skrattoune@cda1585