Allow Users to Set the Primary AI Provider

[alokemajumder]

Description

To enhance customization and usability, implement functionality that allows users to select their preferred primary AI provider (OpenAI, Anthropic, or Gemini) through repository secrets or action inputs.

Expected Benefits

• Users can customize which AI model they prefer based on their specific needs, such as detailed accuracy, response speed, or cost-efficiency.
• Increases the adaptability of the action for different use cases and user preferences.

Tasks

• Develop a configuration system in the workflow file to accept the primary AI choice as an input.
• Modify the Python script to dynamically select the primary AI based on user input.
• Update the README and other documentation to guide users on how to set their primary AI provider.

Acceptance Criteria

• Users can specify their primary AI provider in their workflow file or as a repository secret.
• The system correctly prioritizes the chosen primary AI provider when generating PR content.