new project of returning age from birth as x year, y months , z days old

[NeeruST]

As I m new to python, and also new to GitHub, learning python bit by bit, this is one of my first projects. please check and review

Description

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Fixes #(issue_no)

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• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Documentation Update

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• [ ] I have named my files and folder, according to this project's guidelines.
• [ ] My code follows the style guidelines of this project.
• [ ] My Pull Request has a descriptive title. (not a vague title like Update index.md)
• [ ] I have commented on my code, particularly in hard-to-understand areas.
• [ ] I have created a helpful and easy to understand README.md, according to the given README_TEMPLATE.
• [ ] I have included a requirements.txt file (if external libraries are required.)
• [ ] My changes do not produce any warnings.
• [ ] I have added a working sample/screenshot of the script.