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/text-color.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>text-color</title><path d="M22,21h2L17,4H15L8,21h2l1.61-4h8.74Zm-9.57-6,3.44-8.37h.26L19.54,15Z"/><rect x="6" y="24" width="20" height="4"/><rect class="cls-1" width="32" height="32"/></svg>