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/database-enterprise-db2.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M17.84,24V11.9966H20.783v2h.1149a3.3115,3.3115,0,0,1,3.3572-2.2764c2.46,0,3.84,1.7017,3.84,4.6909V24H25.1519V16.7107c0-1.7017-.5748-2.5754-1.9776-2.5754-1.2187,0-2.3913.6438-2.3913,1.9314V24Z"/> <path d="M4.2236,24V7.95H14.8015v2.69H7.259v3.8862h6.6687v2.6905H7.259V21.31h7.5425V24Z"/> </svg>