Exploration: Look for a better solution on how to handle queues and jobs

[musayann]

Objective

Currently every type of job has it's own kind of model which stores it. This might cause clutter in the future as we are adding more implementations to be processed by jobs such as here #425

Description

• Find a way to reuse the same model for all kind of jobs
• These jobs can vary based on job types.
• Look for a proper way to handle jobs in Nest js

[musayann]

Let's use the default nest js queue library with bullmq. More info on this link https://docs.nestjs.com/techniques/queues