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/3D-curve-auto-colon.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>watson-health--3D-curve--auto-colon</title><path d="M9.5,8H20.1a5,5,0,1,0,0-2H9.5a5.5,5.5,0,0,0,0,11h11a3.5,3.5,0,0,1,0,7H11.9a5,5,0,1,0,0,2h8.6a5.5,5.5,0,0,0,0-11H9.5a3.5,3.5,0,0,1,0-7ZM25,4a3,3,0,1,1-3,3A3,3,0,0,1,25,4ZM7,28a3,3,0,1,1,3-3A3,3,0,0,1,7,28Z"/></svg>