Add Python API Response Comparator Script #580

Is your feature request related to a problem? Please describe.

When developing and testing APIs, comparing JSON responses manually can be time-consuming, especially when responses contain nested objects and arrays. It can be difficult to identify which fields were added, removed, or modified between two API responses.

Describe the solution you'd like

I would like to contribute a Python script that compares two JSON files and displays their differences in a readable format.

The script should:

Identify added, removed, and modified keys.

Support nested JSON objects and arrays.

Display the differences clearly in the terminal.

Accept two JSON file paths through command-line arguments.

Include example usage and unit tests.

Describe alternatives you've considered

Manually comparing JSON files or using online JSON comparison tools. A lightweight Python command-line utility would provide an offline alternative without requiring external services.

Additional context

The implementation would use Python's built-in json and argparse modules wherever possible to avoid unnecessary dependencies.

I plan to add the script in a dedicated folder with its own README.md and update the main repository README.md under the List of Scripts section, following the contribution guidelines.

I welcome feedback and suggestions from the maintainers before beginning implementation.