Implemented smooth scrolling

[Mandar007007]

Fixes Issue🛠️

Closes #646

Description👨‍💻

Now the webpage scrolling is smoother due to locomotive JS library.

Type of change📄

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

How this has been tested✅

Tested locally.

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 @Mandar007007, 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]

Pls work on these @Mandar007007

1. Mention the issue number for which you have created this PR.
2. Navbar should be sticky and fixed as it was before.
3. Scrollbar track and thumb should be visible as it was before.