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/qq-plot.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <title>qq-plot</title> <circle cx="20" cy="4" r="2"/> <circle cx="8" cy="16" r="2"/> <circle cx="28" cy="12" r="2"/> <circle cx="11" cy="7" r="2"/> <circle cx="16" cy="24" r="2"/> <path d="M30,3.4131,28.5859,2,4,26.585V2H2V28a2,2,0,0,0,2,2H30V28H5.4131Z"/> </svg>