Add 3D Vector Operations Calculator

[TinkerTechie]

This PR introduces a 3D Vector Operations Calculator to the repository. The calculator allows users to input two 3D vectors and perform the following operations:
Vector Magnitude: Calculates the length of Vector A and Vector B.
Vector Addition: Computes A + B.
Vector Subtraction: Computes A - B.
Dot Product: Calculates the dot product of A and B.
Cross Product: Calculates the cross product of A and B.
Angle Between Vectors: Computes the angle (in degrees) between A and B.
Features:
Interactive and responsive UI.
Input validation to prevent invalid entries.
Dynamic result display with clear formatting.
Developed with HTML, CSS, and JavaScript for easy integration.
Folder Added:
vector-calculator/ (contains index.html, style.css, script.js)

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[TinkerTechie]

Hi! 👋

I've updated the 3D Vector Operations Calculator with the following changes:

• Added a screenshot of the UI for better visualization.
• Improved HTML, CSS, and JS for enhanced usability.
• Updated folder structure: projects/vector-calculator/
  • index.html
  • style.css
  • script.js
  • assets/screenshot.png

The PR is now ready for review with all the latest changes.

Thanks! 🚀

[swapnilsparsh]

There is already such type of projects present in the repo and follow the contribution guide.