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/double-axis-chart-column.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M28,2v26h-3V6h-7v22h-4v-14h-7v14h-3V2h-2v26c0,1.1046.8954,2,2,2h24c1.1046,0,2-.8954,2-2V2h-2ZM12,28h-3v-12h3v12ZM23,28h-3V8h3v20Z"/> </svg>