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/battery-half.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>battery--half-full</title><path class="cls-1" d="M24,24H6a2,2,0,0,1-2-2V10A2,2,0,0,1,6,8H24a2,2,0,0,1,2,2v1h1a2,2,0,0,1,2,2v6a2,2,0,0,1-2,2H26v1A2,2,0,0,1,24,24ZM6,10V22H24V19h3V13H24V10Z"/><rect class="cls-1" x="8" y="12" width="8" height="8" transform="translate(28 4) rotate(90)"/></svg>