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/quadrant-plot.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <polygon points="30 15 17 15 17 2 15 2 15 15 2 15 2 17 15 17 15 30 17 30 17 17 30 17 30 15"/> <path d="M5,30a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,5,30Zm0-4a1,1,0,1,0,1,1A1.001,1.001,0,0,0,5,26Z"/> <path d="M8,8a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,8,8ZM8,4A1,1,0,1,0,9,5,1.001,1.001,0,0,0,8,4Z"/> <path d="M22,13a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,22,13Zm0-4a1,1,0,1,0,1,1A1.001,1.001,0,0,0,22,9Z"/> <circle cx="11" cy="11" r="2"/> <circle cx="11" cy="21" r="2"/> <circle cx="21" cy="21" r="2"/> <circle cx="22" cy="28" r="2"/> <circle cx="28" cy="24" r="2"/> <circle cx="4" cy="11" r="2"/> <circle cx="28" cy="4" r="2"/> </svg>