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-1-down-filled.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M13,30a6.0067,6.0067,0,0,1-6-6H9a4,4,0,0,0,8,0h2A6.0067,6.0067,0,0,1,13,30Z"/> <path d="M21,2H16.5606a4,4,0,0,0-2.7088,1.0566L4.6513,11.5229A2.0018,2.0018,0,0,0,4.77,14.5781a2.0743,2.0743,0,0,0,2.6578-.1728L11,11.1431V24a2,2,0,0,0,4,0V17a2,2,0,0,0,4,0V16a2,2,0,0,0,4,0V15a2,2,0,0,0,4,0V8A6,6,0,0,0,21,2Z"/> </svg>