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-cloud-transit-gateway.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="m12.5,7.5l-1.4-1.4,3.5-3.5c.8-.8,2.1-.8,2.8,0l3.5,3.5-1.4,1.4-3.5-3.5-3.5,3.5Z"/> <path d="m19.5,24.5l1.4,1.4-3.5,3.5c-.8.8-2.1.8-2.8,0l-3.5-3.5,1.4-1.4,3.5,3.5,3.5-3.5Z"/> <path d="m24.5,12.5l1.4-1.4,3.5,3.5c.8.8.8,2.1,0,2.8l-3.5,3.5-1.4-1.4,3.5-3.5-3.5-3.5Z"/> <path d="m7.5,19.5l-1.4,1.4-3.5-3.5c-.8-.8-.8-2.1,0-2.8l3.5-3.5,1.4,1.4-3.5,3.5,3.5,3.5Z"/> <path d="m26,24c-.2,0-.3,0-.5.1l-6.1-6.1c.8-1.2.8-2.8,0-4l6.1-6.1c.2.1.3.1.5.1,1.1,0,2-.9,2-2s-.9-2-2-2-2,.9-2,2c0,.2,0,.3.1.5l-6.1,6.1c-1.2-.8-2.8-.8-4,0l-6.1-6.1c.1-.2.1-.3.1-.5,0-1.1-.9-2-2-2s-2,.9-2,2,.9,2,2,2c.2,0,.3,0,.5-.1l6.1,6.1c-.8,1.2-.8,2.8,0,4l-6.1,6.1c-.2-.1-.3-.1-.5-.1-1.1,0-2,.9-2,2s.9,2,2,2,2-.9,2-2c0-.2,0-.3-.1-.5l6.1-6.1c1.2.8,2.8.8,4,0l6.1,6.1c0,.2-.1.3-.1.5,0,1.1.9,2,2,2s2-.9,2-2-.9-2-2-2Zm-10-6c-1.1,0-2-.9-2-2s.9-2,2-2,2,.9,2,2-.9,2-2,2Z"/> </svg>