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/rotate-counterclockwise-alt-filled.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>rotate--counterclockwise--alt--filled</title><path d="M14,28V16a2.0023,2.0023,0,0,1,2-2H28a2.0023,2.0023,0,0,1,2,2V28a2.0023,2.0023,0,0,1-2,2H16A2.0023,2.0023,0,0,1,14,28Z" transform="translate(0 0)"/><path d="M2,15l1.41-1.41L6,16.17V11a7.0078,7.0078,0,0,1,7-7h5V6H13a5.0057,5.0057,0,0,0-5,5v5.17l2.59-2.58L12,15,7,20Z" transform="translate(0 0)"/></svg>