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.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>connect</title><path d="M23,16a7,7,0,0,0-4.18,1.39L14.6,13.17A6.86,6.86,0,0,0,16,9a7,7,0,1,0-2.81,5.59l4.21,4.22A7,7,0,1,0,23,16ZM4,9a5,5,0,1,1,5,5A5,5,0,0,1,4,9Z" transform="translate(0 0.01)"/></svg>