wiki: add Carbon Design System icons (2673) + pictograms (1000)

- 2673 SVG icons from @carbon/icons v11.82.0 (~2.5 MB)
- 1000 SVG pictograms from Carbon Design System (~2.0 MB)
- Updated 00-overview.md with asset structure and category listing

All icons: 32x32, fill: currentColor, optimized SVG
All pictograms: 24x24, fill: currentColor, SVG

assets/icons/carbon/shopping-cart-plus.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <circle cx="10" cy="28" r="2"/> <circle cx="24" cy="28" r="2"/> <path d="M4.9806,2.8039A1,1,0,0,0,4,2H0V4H3.18L7.0194,23.1961A1,1,0,0,0,8,24H26V22H8.82l-.8-4H26a1,1,0,0,0,.9762-.783L29.2445,7H27.1971l-1.9989,9H7.62Z" transform="translate(0)"/> <polygon points="18 6 18 2 16 2 16 6 12 6 12 8 16 8 16 12 18 12 18 8 22 8 22 6 18 6"/> </svg>