Pull Request: Refactor Codebase and Enhance CLI Functionality

[ABDELLAH-Hallou]

Summary

This pull request introduces structural changes to the Pip With Packages (pwp) , to enhance code organization, CLI functionality, and requirements management.

Changes

1. Codebase Refactoring:
   • Created a new utils directory to house separated components.
   • Decomposed main.py into multiple, focused files:
     • pwp_manager.py: Manages the core package functionalities.
     • pwp_parser.py: Handles argument parsing and command processing.
     • requirements_manager.py: Manages package requirements.
2. Functionality Enhancements:
   • Command Handling:
     • Updated install and uninstall functions to accept args and unknown_args, allowing for more flexible command-line usage.
     • Added support for specifying a custom requirements file with args.req_file.
     • Implemented functionality to pass unknown arguments to pip, facilitating advanced usage.
   • Requirements Management:
     • Replaced create_or_update_requirements with add_requirement and rm_requirement functions for more specialized handling.
     • Added get_package_version function to retrieve and track package versions using pip show.
   • Enhanced add_requirement and rm_requirement Functions:
     • add_requirement now supports version-specific entries and custom requirements file names.
3. CLI Improvements:
   • Replaced basic argument parsing with argparse, for more robust CLI experience.
   • Added --req-file option to specify a custom requirements file.

Thank you for creating such a great package; it is truly a lifesaver!