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/aggregator-count-rows.svg

@@ -0,0 +1,2 @@
+<svg id="icon" version="1.1" viewBox="0 0 32 32"> <!-- Generator: Adobe Illustrator 29.5.1, SVG Export Plug-In . SVG Version: 2.1.0 Build 141) --> <path d="M13,28h2v2h-6v-2h2v-5h-2v-2h2v-1h2v8ZM21,20h-4v2h4v2h-2c-1.1,0-2,.9-2,2v4h6v-2h-4v-2h2c1.1,0,2-.9,2-2v-2c0-1.1-.9-2-2-2ZM29,20h-4v2h4v2h-3v2h3v2h-4v2h4c1.1,0,2-.9,2-2v-6c0-1.1-.9-2-2-2ZM12.4,13L3.4,4h14.6v-2H1v2.4l8.6,8.6L1,21.6v2.4h6v-2h-3.6l9-9Z"/> <rect id="__x3C_Transparent_Rectangle_x3E_" class="st0" width="32" height="32"/>
+</svg>