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/CBL.svg

@@ -0,0 +1,2 @@
+<svg id="Icon" width="32" height="32" version="1.1" viewBox="0 0 32 32"> <!-- Generator: Adobe Illustrator 30.0.0, SVG Export Plug-In . SVG Version: 2.1.1 Build 123) --> <path d="M30,21v2h-8v-14h2v12h6ZM10,21h-6v-10h6v-2h-6c-1.103,0-2,.897-2,2v10c0,1.1025.897,2,2,2h6v-2ZM20,14c0,.7712-.3006,1.468-.7804,2,.4798.5321.7804,1.2288.7804,2v2c0,1.6543-1.3457,3-3,3h-5v-14h5c1.6543,0,3,1.3457,3,3v2ZM18,18c0-.5518-.4487-1-1-1h-3v4h3c.5513,0,1-.4482,1-1v-2ZM18,12c0-.5513-.4487-1-1-1h-3v4h3c.5513,0,1-.4487,1-1v-2Z"/> <rect id="__x3C_Transparent_Rectangle_x3E_" class="st0" width="32" height="32"/>
+</svg>