Added Lease Calculator

[Meetjain1]

Fixes Issue🛠️

Closes #1674

Description👨‍💻

A simple and intuitive lease calculator that helps users determine their monthly lease payments, total payments, and total interest.

Type of Change📄

• [X] New feature (non-breaking change which adds functionality)

Checklist✅

• [X] I am an Open Source contributor
• [X] I have performed a self-review of my code
• [X] My code follows the style guidelines of this project
• [X] I have commented on my code, particularly in hard-to-understand areas

Screenshots/GIF📷

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[Meetjain1]

@Rakesh9100 sir please review this pr. Thanks

[Meetjain1]

@Rakesh9100 sir please review this pr. Thanks

@Rakesh9100 sir, please review this pr . Thanks

[github-actions[bot]]

Congrats, Your pull request has been successfully merged 🥳🎉 Thank you for your contribution to my project 🚀 Keep Contributing!! ✨ @Meetjain1