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)

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• 69c618f7 - feat: add consumer/producer. Separate agent rest and nats. Make them switchable based on env var.

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• f663ab6d - feat: consumer is configured to use env vars. fixed the bug with key already...

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• e5d5ad81 - chore: cleanup validatiomn file

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marked the checklist item My code follows the style guidelines of this project as completed

marked the checklist item I have tested this code on my local machine before submitting this MR as completed

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• f79b2351 - chore: add env example

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• ef7f3da6 - feat: Add config for managing consumer.

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marked the checklist item I have updated the documentation (if necessary) as completed

merged