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/soil-moisture-global.svg

@@ -0,0 +1 @@
+<svg id="Layer_1" data-name="Layer 1" width="32" height="32" viewBox="0 0 32 32"> <path d="M25,30a4.7347,4.7347,0,0,1-4.2075-7.35l3.3687-5.1942a1,1,0,0,1,1.6779,0l3.3152,5.11A4.9753,4.9753,0,0,1,30,25.2231,4.8979,4.8979,0,0,1,25,30Zm0-10.1629-2.5078,3.8662A2.9264,2.9264,0,1,0,28,25.2231a2.96,2.96,0,0,0-.5444-1.6028Z" transform="translate(0 0)"/> <path d="M11,24H9A17.0192,17.0192,0,0,1,26,7h4V9H26A15.017,15.017,0,0,0,11,24Z" transform="translate(0 0)"/> <path d="M16,24H14A12.0137,12.0137,0,0,1,26,12h4v2H26A10.0113,10.0113,0,0,0,16,24Z" transform="translate(0 0)"/> <path d="M26,2A21.8625,21.8625,0,0,0,13.9993,5.5757,21.856,21.856,0,0,0,2,2V4A19.8735,19.8735,0,0,1,12.2622,6.835,22.1514,22.1514,0,0,0,9.9475,8.979,17.001,17.001,0,0,0,2,7V9a15.0142,15.0142,0,0,1,6.6191,1.5366,22.0768,22.0768,0,0,0-1.7016,2.5371A12.0319,12.0319,0,0,0,2,12v2a9.8838,9.8838,0,0,1,4.0007.8506A21.861,21.861,0,0,0,4,24H6A20.0226,20.0226,0,0,1,26,4h4V2Z" transform="translate(0 0)"/> </svg>