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/explore.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M22.707,9.2931a.9992.9992,0,0,0-1.0234-.2417l-9,3a1.001,1.001,0,0,0-.6323.6323l-3,9a1,1,0,0,0,1.2651,1.2651l9-3a1.0013,1.0013,0,0,0,.6323-.6324l3-9A1,1,0,0,0,22.707,9.2931ZM11.5811,20.419l2.2094-6.6284L18.21,18.21Z"/> <path d="M16,30A14,14,0,1,1,30,16,14.0158,14.0158,0,0,1,16,30ZM16,4A12,12,0,1,0,28,16,12.0137,12.0137,0,0,0,16,4Z"/> </svg>