docs: Improve README with better instructions and contribution guide

[Roshnicoderr]

This PR updates the README file to make the project more accessible and beginner-friendly. It includes:

• A clear project description
• Setup instructions
• Contribution guidelines
• Tech stack used
• License section

Fixes: #<issue_number_if_any>

[vercel]

Someone is attempting to deploy a commit to the GirlScript Foundation Team on Vercel.

A member of the Team first needs to authorize it.

[Roshnicoderr]

Hi mentors! 👋
This PR only updates the README and doesn't change any app logic or code.
The Vercel check failed because external contributors can’t trigger deployments.
Kindly review and merge if it looks good. 😊

[she-codesstuff]

Hi mentors! I'd like to contribute to implementing a dynamic blog/news section for the website. My approach would be:

Set up dynamic routing with /blog/[slug].js using Next.js file-based routing.

Use markdown files for blog content or optionally integrate with a headless CMS like Notion or Sanity.

Add a blog listing page (e.g., /blog) and individual blog post pages using getStaticPaths and getStaticProps.

Ensure responsiveness and basic SEO support.

Let me know if this feature is still available to work on