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/connect-source.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M24,10l-1.4141,1.4141L26.1719,15H11.8989A5.0145,5.0145,0,0,0,8,11.1011V2H6v9.1011a5,5,0,0,0,0,9.7978V30H8V20.8989A5.0145,5.0145,0,0,0,11.8989,17h14.273l-3.586,3.5859L24,22l6-6ZM7,19a3,3,0,1,1,3-3A3.0033,3.0033,0,0,1,7,19Z"/> </svg>