feat: implement Lenis smooth scroll and animated stat counters

- Add Lenis smooth scroll library (Landing page only)
- Create SmoothScroll wrapper component with GSAP integration
- Implement animated stat counters with scroll-triggered count-up
- Add GSAP animations for stats section (40%, 5yrs, 15m)
- Update package.json with lenis dependency

package.json

@@ -15,9 +15,11 @@
     "autoprefixer": "^10.4.23",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "framer-motion": "^12.34.0",
     "groq-sdk": "^0.37.0",
     "gsap": "^3.14.2",
     "leaflet": "^1.9.4",
+    "lenis": "^1.3.17",
     "lucide-react": "^0.563.0",
     "postcss": "^8.5.6",
     "react": "^19.2.0",