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/carousel-horizontal.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>carousel--horizontal</title><path d="M22,26H10a2,2,0,0,1-2-2V8a2,2,0,0,1,2-2H22a2,2,0,0,1,2,2V24A2,2,0,0,1,22,26ZM10,8V24H22V8Z"/><path d="M4,24H0V22H4V10H0V8H4a2,2,0,0,1,2,2V22A2,2,0,0,1,4,24Z"/><path d="M32,24H28a2,2,0,0,1-2-2V10a2,2,0,0,1,2-2h4v2H28V22h4Z"/></svg>