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/document-sentiment.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>document-sentiment</title><path d="M18.303,16a2.6616,2.6616,0,0,0-1.9079.8058l-.3932.4054-.397-.4054a2.6615,2.6615,0,0,0-3.8157,0,2.7992,2.7992,0,0,0,0,3.8964L16.0019,25l4.2089-4.2978a2.7992,2.7992,0,0,0,0-3.8964A2.6616,2.6616,0,0,0,18.303,16Z" transform="translate(0)"/><path d="M25.7,9.3l-7-7A.9078.9078,0,0,0,18,2H8A2.0059,2.0059,0,0,0,6,4V28a2.0059,2.0059,0,0,0,2,2H24a2.0059,2.0059,0,0,0,2-2V10A.9078.9078,0,0,0,25.7,9.3ZM18,4.4,23.6,10H18ZM24,28H8V4h8v6a2.0059,2.0059,0,0,0,2,2h6Z" transform="translate(0)"/></svg>