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/hole-filling-cursor.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>hole-filling--cursor</title><circle cx="19" cy="19" r="4"/><path d="M28,30H10a2.0023,2.0023,0,0,1-2-2V10a2.0023,2.0023,0,0,1,2-2H28a2.0023,2.0023,0,0,1,2,2V28A2.0023,2.0023,0,0,1,28,30ZM10,10V28H28V10Z"/><polygon points="11 2 2 2 2 11 4 11 4 4 11 4 11 2"/></svg>