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/warning-square-filled.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>warning-square--filled</title><path d="M26.0022,4H5.998A1.998,1.998,0,0,0,4,5.998V26.002A1.998,1.998,0,0,0,5.998,28H26.0022A1.9979,1.9979,0,0,0,28,26.002V5.998A1.9979,1.9979,0,0,0,26.0022,4ZM14.8752,8h2.25V18h-2.25ZM16,24a1.5,1.5,0,1,1,1.5-1.5A1.5,1.5,0,0,1,16,24Z"/><path id="inner-path" class="cls-1" d="M14.8751,8h2.25V18h-2.25ZM16,24a1.5,1.5,0,1,1,1.5-1.5A1.5,1.5,0,0,1,16,24Z"/></svg>