Added Credit Card Payoff Calculator

[Yuvraj960]

Fixes Issue🛠️

Closes #554

Description👨‍💻

Added the calculator which helps you calculating the time you need to pay-off your credits

Type of change📄

• New feature (added new calculator)

How this has been tested✅

• Done checking the calculations from the basic formulae and validating the results of calculator.
• Verified the results from the calculators that are currently on the internet, and are verified for their accurate results.
• Tested for responsiveness so that it can run on any device

Checklist✅

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I am an Open Source Contributor

Screenshots/GIF📷

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[github-actions]

Hey @Yuvraj960, Welcome to the project CalcDiverse! 🎊
Thanks for your contribution! Your effort makes this project better. Keep it up! 🙌
Please wait for the PR to be reviewed. Happy Coding!! ✨

[Rakesh9100]

1. Pls rename your folder to Credit-Card-Payoff-Calculator and make the necessary changes in this same PR.
2. Add a Readme.md file in your calculator folder.
3. Make sure to always update your forked repo branch time to time so that conflicts should not occur @Yuvraj960

[Yuvraj960]

@Rakesh9100, Done updating all the changes in the calculator. Let's Merge it!

[Rakesh9100]

Merged 🎉 @Yuvraj960