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/touch-2.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>touch-2</title><path d="M29,15H27A11,11,0,0,0,5,15H3a13,13,0,0,1,26,0Z"/><path d="M25,28H23V15A7,7,0,1,0,9,15V28H7V15a9,9,0,0,1,18,0Z"/><path d="M21,20H11V15a5,5,0,0,1,10,0Zm-8-2h6V15a3,3,0,0,0-6,0Z"/></svg>