Optimize hero section performance and add SEO metadata

[Suryank7]

Pull Request Title

perf: Optimize hero section performance and add SEO metadata

Description

Overview

This PR improves the landing page's initial rendering speed and search engine visibility by applying lazy loading and SEO descriptions.

Changes Made

• Added an SEO meta name="description" tag
• Added loading="lazy" attribute to the hero section image
• Improved Largest Contentful Paint (LCP) metrics
• Enhanced search engine discoverability

Issue Linked

Closes # (Add issue number if applicable)

Type of Change

• Bug fix
• New feature
• Breaking change
• UI/UX improvement (Performance & SEO)
• Documentation update

Screenshots / Demo

Before

N/A

After

N/A

Testing

Tested on:

• Chrome
• Edge
• Mobile viewport
• Tablet viewport

Checklist

• Code follows project guidelines
• Properly tested changes
• No new warnings/errors
• Documentation updated if required
• Issue properly linked

Additional Notes

Optimizing the hero image and providing a clear description helps LearnSphere index better on Google and ensures a smoother experience for students on slower connections.

[omroy07]

Assigned

[raniarji3-cloud]

Hi @omroy07 , I am contributor and I like to fix this issue. Could you please assign me .
Thank you.!

[omroy07]

It is already assigned