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/send-alt-filled.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>send--alt--filled</title><path d="M27.71,4.29a1,1,0,0,0-1.05-.23l-22,8a1,1,0,0,0,0,1.87l8.59,3.43L19.59,11,21,12.41l-6.37,6.37,3.44,8.59A1,1,0,0,0,19,28h0a1,1,0,0,0,.92-.66l8-22A1,1,0,0,0,27.71,4.29Z"/></svg>