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/connection-signal.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>mobile-data</title><rect x="15" y="12" width="2" height="18"/><path d="M11.33,18.22a7,7,0,0,1,0-10.44l1.34,1.49a5,5,0,0,0,0,7.46Z"/><path d="M20.67,18.22l-1.34-1.49a5,5,0,0,0,0-7.46l1.34-1.49a7,7,0,0,1,0,10.44Z"/><path d="M8.4,21.8a11,11,0,0,1,0-17.6L9.6,5.8a9,9,0,0,0,0,14.4Z"/><path d="M23.6,21.8l-1.2-1.6a9,9,0,0,0,0-14.4l1.2-1.6a11,11,0,0,1,0,17.6Z"/></svg>