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/datastore.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>datastore</title><circle cx="23" cy="23" r="1"/><rect x="8" y="22" width="12" height="2"/><circle cx="23" cy="9" r="1"/><rect x="8" y="8" width="12" height="2"/><path d="M26,14a2,2,0,0,0,2-2V6a2,2,0,0,0-2-2H6A2,2,0,0,0,4,6v6a2,2,0,0,0,2,2H8v4H6a2,2,0,0,0-2,2v6a2,2,0,0,0,2,2H26a2,2,0,0,0,2-2V20a2,2,0,0,0-2-2H24V14ZM6,6H26v6H6ZM26,26H6V20H26Zm-4-8H10V14H22Z"/></svg>