feat: Add image lazy loading and optimization

[Ashvin-KS]

Problem

Project images load eagerly, slowing initial page load.

Proposed Solution

• Add lazy loading for project images
• Use Next.js Image component for optimization
• Add placeholder blur effect

Benefits

• Faster initial page load
• Better Core Web Vitals scores
• Improved user experience

Implementation Notes

• Use loading='lazy' attribute
• Use Next.js Image with blur placeholder
• Consider using a CDN for images