Ability to Update OpenAPI Key Without Manual Change

[devilcoder01]

Issue Description

Current Behavior:

When initializing the code, users are prompted to enter their OpenAI API key. If the API key needs to be changed (e.g., after a month), it must be manually updated.

Proposed Improvement:

Implement a feature that allows users to easily update their OpenAI API key without manual intervention. This could be achieved through a configuration file or a command within the tool. This could be done through a command-line option.