Add Support for Configuration via Environment Variables

[saibot07]

Description

Currently, python_repo_boost relies entirely on specifying configuration values via a settings file or command-line arguments. For better flexibility and to adapt to modern deployment practices (e.g., Docker and cloud environments), it would be a great enhancement to allow configuration via environment variables.

Proposed Solution

• Extend the configuration loader to check for environment variables as a fallback mechanism if certain configuration options are not specified in the settings file.
• Define a clear mapping between environment variable names and the configuration options.

Example

For instance, if the settings file has an option api_key, we can map this to an environment variable PYTHON_REPO_BOOST_API_KEY.

Benefits

• Simplifies configuration for cloud-based deployments.
• Enhances security practices by allowing sensitive data (e.g., API keys) to be handled via environment variables rather than being stored in code or files.

To Do

• Discuss and finalize naming conventions for the environment variables.
• Update the documentation to reflect these changes.