Added Caesar Cipher Encryption Calculator

[Archiesachin]

Fixes Issue🛠️

Closes #1339

Description👨‍💻

Encrypts the given plaintext into cipher text based on the key provided by the user using a technique called Caesar Cipher.

Type of Change📄

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

Checklist✅

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

Screenshots/GIF📷

[github-actions]

Hey @Archiesachin, 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!! ✨

[netlify]

✅ Deploy Preview for calcdiverse ready!

Name	Link
🔨 Latest commit	8abf315
🔍 Latest deploy log	https://app.netlify.com/sites/calcdiverse/deploys/667d424d6dcd21000891812b
😎 Deploy Preview	https://deploy-preview-1408--calcdiverse.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[Nihal4777]

@Rakesh9100 This PR can be merged.

[Rakesh9100]

@Nihal4777 Readme file is missing, pls check properly.

Pls add the Readme file of your calculator in your folder and also enhance the UI @Archiesachin

[Archiesachin]

@Nihal4777 @Rakesh9100 I have made the required changes. Please check the PR and assign the label levels as well. Thank you

[github-actions]

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