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/pointer-text.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>watson-health--pointer-text</title><polygon points="13.71 12.29 7.41 6 13 6 13 4 4 4 4 13 6 13 6 7.41 12.29 13.71 13.71 12.29"/><path d="M28,30H12a2,2,0,0,1-2-2V18h2V28H28V12H18V10H28a2,2,0,0,1,2,2V28A2,2,0,0,1,28,30Z"/><path d="M22,15H17v2h5v2H18a2,2,0,0,0-2,2v2a2,2,0,0,0,2,2h6V17A2,2,0,0,0,22,15Zm0,8H18V21h4Z"/></svg>