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/virtual-private-cloud.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>virtual-private-cloud</title><path d="M20,20V17a4,4,0,0,0-8,0v3a2.0025,2.0025,0,0,0-2,2v6a2.0025,2.0025,0,0,0,2,2h8a2.0025,2.0025,0,0,0,2-2V22A2.0025,2.0025,0,0,0,20,20Zm-6-3a2,2,0,0,1,4,0v3H14ZM12,28V22h8l.0012,6Z" transform="translate(0)"/><path d="M25.8288,10.1152A10.0067,10.0067,0,0,0,17.89,2.1816,10.0025,10.0025,0,0,0,6.17,10.1152,7.502,7.502,0,0,0,7.4912,25H8V23H7.4953a5.5019,5.5019,0,0,1-.9694-10.9165l1.3488-.2441.2591-1.3457a8.0109,8.0109,0,0,1,15.7312,0l.259,1.3457,1.3489.2441A5.5019,5.5019,0,0,1,24.5076,23H24v2h.5076a7.502,7.502,0,0,0,1.3212-14.8848Z" transform="translate(0)"/></svg>