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/registration.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>registration</title><path d="M28,25H20a2.0027,2.0027,0,0,1-2-2V20h2v3h8V9H20v3H18V9a2.0023,2.0023,0,0,1,2-2h8a2.0023,2.0023,0,0,1,2,2V23A2.0027,2.0027,0,0,1,28,25Z"/><rect x="8" y="15" width="4" height="2"/><rect x="20" y="15" width="4" height="2"/><rect x="14" y="15" width="4" height="2"/><path d="M12,25H4a2.0023,2.0023,0,0,1-2-2V9A2.002,2.002,0,0,1,4,7h8a2.002,2.002,0,0,1,2,2v3H12V9H4V23h8V20h2v3A2.0023,2.0023,0,0,1,12,25Z"/></svg>