docs: add Contributors section with contrib.rocks badge

[Yogender-verma]

Current Problem:

The README.md currently lacks a proper Contributors section to recognize contributors and guide new ones.

Proposed Solution:

• Add a Contributors section at the end of the README
• Include an auto-generated contrib.rocks badge to visually display contributors
• Maintain all existing content without removing or breaking anything

Benefits:

• Recognizes and credits contributors visually
• Makes the repository more welcoming for new contributors
• Enhances README UI/UX with contributor avatars
• Encourages open-source participation

[Janani-bn]

Hi @chthonn I'm a GSSoC 2026 contributor. I looked into the issue and I would like to work on it. Kindly assign it to me.

[chthonn]

@Yogender-verma
please go ahead