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/insert-page.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <title>insert--page</title> <path d="M26,30H24V20H12V30H10V20a2.0021,2.0021,0,0,1,2-2H24a2.0021,2.0021,0,0,1,2,2Z"/> <polygon points="5.17 16 2 19.17 3.411 20.589 8 16 3.42 11.42 2 12.83 5.17 16"/> <path d="M24,14H12a2.0021,2.0021,0,0,1-2-2V2h2V12H24V2h2V12A2.0021,2.0021,0,0,1,24,14Z"/> </svg>