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/document-set.svg

@@ -0,0 +1,2 @@
+<svg id="icon" version="1.1" viewBox="0 0 32 32"> <!-- Generator: Adobe Illustrator 29.1.0, SVG Export Plug-In . SVG Version: 2.1.0 Build 142) --> <path d="M12,4h8v6c0,1.1.9,2,2,2h6v6h2v-8c0-.3-.1-.5-.3-.7l-7-7c-.2-.2-.4-.3-.7-.3h-10c-1.1,0-2,.9-2,2v24c0,1.1.9,2,2,2h4v-2h-4V4ZM22,4.4l5.6,5.6h-5.6v-5.6ZM30,22l-8,8-4-4,1.4-1.4,2.6,2.6,6.6-6.6,1.4,1.4ZM4,27h-2V7h2v20ZM8,28h-2V4h2v24Z"/> <rect id="__x3C_Transparent_Rectangle_x3E_" class="st0" width="32" height="32"/>
+</svg>