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/interface-definition.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M28,19h-7c-1.1028,0-2,.8975-2,2v2h-2v-14c0-1.1025-.8972-2-2-2h-2v-3c0-1.1025-.8972-2-2-2h-7c-1.1028,0-2,.8975-2,2v7c0,1.1025.8972,2,2,2h7c1.1028,0,2-.8975,2-2v-2h2v14c0,1.1025.8972,2,2,2h2v3c0,1.1025.8972,2,2,2h7c1.1028,0,2-.8975,2-2v-7c0-1.1025-.8972-2-2-2ZM11,11h-7v-7h7v7ZM28,28h-7v-7h7v7Z"/> </svg>