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/array-decimal.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="M4,24h-2v4c0,1.105.895,2,2,2h4v-2h-4v-4ZM28,2h-4v2h4v4h2v-4c0-1.105-.895-2-2-2ZM2,4v4h2v-4h4v-2h-4c-1.105,0-2,.895-2,2ZM28,28h-4v2h4c1.105,0,2-.895,2-2v-4h-2v4ZM5,19v2h2v-2h-2ZM13,11h-2c-1.104.001-1.999.896-2,2v6c.001,1.104.896,1.999,2,2h2c1.104-.001,1.999-.896,2-2v-6c-.001-1.104-.896-1.999-2-2ZM13,19h-2v-6h2v6ZM21,11h-2c-1.104.001-1.999.896-2,2v6c.001,1.104.896,1.999,2,2h2c1.104-.001,1.999-.896,2-2v-6c-.001-1.104-.896-1.999-2-2ZM21,19h-2v-6h2v6Z"/> <rect id="__x3C_Transparent_Rectangle_x3E_" class="st0" width="32" height="32"/>
+</svg>