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/scooter-front.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>scooter--front</title><rect x="15" y="19" width="2" height="9"/><path d="M23,10V8H20a2.0025,2.0025,0,0,0-2-2H14a2.0025,2.0025,0,0,0-2,2H9v2h3v4.1841A2.9957,2.9957,0,0,0,10,17v7h2V17a1.0008,1.0008,0,0,1,1-1h6a1.0008,1.0008,0,0,1,1,1v7h2V17a2.9957,2.9957,0,0,0-2-2.8159V10ZM18,8v6H14V8Z"/></svg>