Add state explorer browsing

[rutul2006]

This PR introduces a new State Exploration Section on the homepage to help users discover regional delicacies state-wise.

The section dynamically renders available states from items.json and redirects users to:

text

state.html?state=StateName
No separate state pages were created, maintaining the existing scalable architecture.

🚀 What’s Included
✅ Dynamic extraction of unique states from items.json
✅ Horizontally scrollable layout (3 rows)
✅ Responsive design for all screen sizes
✅ Clickable state cards
✅ Smooth scrolling behavior
✅ Optimized state images with lazy loading
✅ Consistent card sizing and hover effects
✅ No hardcoded state list
🖼 Image Structure Used
text

img/states/[state-name].jpeg
Lowercase
Kebab-case naming
One image per state (famous landmark)
Example:

text

img/states/gujarat.jpeg
img/states/punjab.jpeg
🔄 User Flow
State Card Click
↓
state.html?state=StateName
↓
Dynamic filtering using items.json
↓
State-specific dishes rendered