Added Inflation Calculator

[thenagarajanv]

Fixes Issue🛠️

Closes #1165

Description👨‍💻

In this calculator we can calculate Future cost using cost Price, Rate Of Inflation Percentage and Time Period.

Type of change📄

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

How this has been tested✅

• Tested the results from an already existing online slope calculator
• Manually verified all the results from the formulae

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📷

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[github-actions]

Hey @thenagarajanv, 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]

Which issue are you assigned to that you have created this PR @thenagarajanv

[thenagarajanv]

#1165 I've created issue Please check it out @Rakesh9100 !

[Rakesh9100]

Please do not create a PR until you have been assigned to an issue @thenagarajanv