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/ibm-z-processor-capacity-reference.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <rect x="25" y="25" width="2" height="4"/> <rect x="21" y="23" width="2" height="6"/> <rect x="29" y="20" width="2" height="9"/> <path d="m30,17V5c0-1.1046-.8954-2-2-2h-9c-1.1046,0-2,.8954-2,2v24h2V5h9v12h2Z"/> <path d="m13,3H4c-1.1046,0-2,.8954-2,2v22c0,1.1046.8954,2,2,2h9c1.1046,0,2-.8954,2-2V5c0-1.1046-.8954-2-2-2Zm-9,2.9635l8.2998,6.0365-8.2998,6.0365V5.9635Zm0,21.0365v-5.0366l6.9253,5.0366h-6.9253Zm9-.9635l-8.2998-6.0365,8.2998-6.0365v12.073Zm0-15.9999l-6.9253-5.0366h6.9253v5.0366Z"/> </svg>