feat: implement nat broker consumer-provider

Description

• Added a separate nats module to handle the consuming and providing of events.
• Separated rest and nats for asker lib can be used with env vars
• Added concurrent consuming with mutex and lock aka rate limiter that is configured with env vars

Related issues

no related issues

Testing

no tests for now :(

Checklist

• I have updated the documentation (if necessary)
• I have added unit tests for new functionality (if applicable)
• My code follows the style guidelines of this project
• I have tested this code on my local machine before submitting this MR

Additional Notes

No additional notes

Closes #7 (closed)