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/finance.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>finance</title><rect x="2" y="28" width="28" height="2"/><path d="M27,11a1,1,0,0,0,1-1V7a1,1,0,0,0-.66-.94l-11-4a1,1,0,0,0-.68,0l-11,4A1,1,0,0,0,4,7v3a1,1,0,0,0,1,1H6V24H4v2H28V24H26V11ZM6,7.7,16,4.06,26,7.7V9H6ZM18,24H14V11h4ZM8,11h4V24H8ZM24,24H20V11h4Z" transform="translate(0 0)"/></svg>