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/classic-batch.svg

@@ -0,0 +1,2 @@
+<svg id="icon" version="1.1" viewBox="0 0 32 32"> <!-- Generator: Adobe Illustrator 29.6.1, SVG Export Plug-In . SVG Version: 2.1.1 Build 9) --> <path d="M30,4v16c0,1.1-.9,2-2,2H12c-1.1,0-2-.9-2-2V4c0-1.1.9-2,2-2h16c1.1,0,2,.9,2,2ZM28,20V4H12v16h16ZM8,6h-2v18c0,1.1.9,2,2,2h18v-2H8V6ZM4,10h-2v18c0,1.1.9,2,2,2h18v-2H4V10Z"/> <rect id="__x3C_Transparent_Rectangle_x3E_" class="st0" width="32" height="32"/>
+</svg>