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/expand-screen.svg

@@ -0,0 +1 @@
+<svg id="Icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M28,28h-11c-1.103,0-2-.8975-2-2v-6c0-1.1025.897-2,2-2h11c1.1025,0,2,.8975,2,2v6c0,1.1025-.8975,2-2,2ZM17,20v6h11.002l-.002-6h-11ZM13,20H4V7h22v9h2V7c0-1.103-.8975-2-2-2H4c-1.103,0-2,.897-2,2v13c0,1.1025.897,2,2,2h9v-2ZM7.9999,15.9999v-3.586l4.293,4.293,1.414-1.414-4.293-4.293h3.586v-2h-7v7h2Z"/> </svg>