Added Pet Age Calculator

[abhay-sen]

Fixes Issue🛠️

Closes #698

Description👨‍💻

Added a new calculator name the Pet-Age-Calculator that adds a calculator that calculates a pets age in human years

Type of change📄

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

How this has been tested✅

Tested on various values for years and months for different pets

Checklist✅

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added demonstration in the form of GIF/video file
• I am an Open Source Contributor

Screenshots/GIF📷

[github-actions]

Hey @abhay-sen, 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!! ✨

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[Rakesh9100]

Congrats on getting your PR merged to the repo under GSSOC 2k24 🥳 @abhay-sen

[abhay-sen]

Thankyou sir