refactor(get_env_vars): use get_env_vars() for consistent env variable retrieval

[ananta]

Refactor Environment Variable Retrieval Across Application - Resolves #168

Overview

This PR addresses issue #168 by refactoring the application to consistently use the get_env_vars() function for environment variable retrieval.

Proposed Changes

• Added a new module in config.py, introducing the following components:
  • EnvVars: A class that encapsulates all environment variables required in the script.
  • get_env_vars(): A function to retrieve an instance of EnvVars populated with environment variables.

Readiness Checklist

Author/Contributor

• run make lint and fix any issues that you have introduced
• run make test and ensure you have test coverage for the lines you are introducing

Reviewer

• Label as either bug, documentation, enhancement, infrastructure, or breaking

[zkoppert]

Thanks for contributing @ananta! This is a great improvement and it looks like everything from code to tests is well handled. Thank you! 🎉