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.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>rotate--counterclockwise</title><path d="M2,28V16a2.0023,2.0023,0,0,1,2-2H16a2.0023,2.0023,0,0,1,2,2V28a2.0023,2.0023,0,0,1-2,2H4A2.0023,2.0023,0,0,1,2,28ZM4,16,3.9988,28H16V16Z" transform="translate(0 0)"/><path d="M17,2l1.41,1.41L15.83,6H21a7.0078,7.0078,0,0,1,7,7v5H26V13a5.0057,5.0057,0,0,0-5-5H15.83l2.58,2.59L17,12,12,7Z" transform="translate(0 0)"/></svg>