[UI Enhancement] Add Count-Up Animation Effect for Achievement Numbers

[ItsMeRaseeca]

Description:
The numbers in the "Our Achievements" section are currently static. To make this section more engaging and visually dynamic, we can implement a count-up animation effect where the numbers animate from 0 up to their actual values when the section comes into view.

Implementation details:

1. Use a JavaScript library (e.g., CountUp.js) or a custom script to animate the numbers.
2. Trigger the animation on scroll when the section enters the viewport (using Intersection Observer API or a scroll event).
3. Ensure the animation runs smoothly and only once per page load.
4. Keep the animation duration short (1–2 seconds) for better UX.
5. Maintain accessibility (numbers should still be readable by screen readers).

Please assign me this issue under GSSoC'25 contributor, thanks!

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊

[lolpanda2004]

@ItsMeRaseeca Assigned!