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/model-builder.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M22,4V7H10V4H2v8h8V9h7.0234A4.9463,4.9463,0,0,0,16,12v8A3.0037,3.0037,0,0,1,13,23H10V20H2v8h8V25H13A5.0062,5.0062,0,0,0,18,20V12a2.9982,2.9982,0,0,1,2.9971-3H22v3h8V4ZM8,10H4V6H8ZM8,26H4V22H8ZM28,10H24V6h4Z"/> </svg>