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/pills.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>pills</title><path d="M22,14a7.94,7.94,0,0,0-4,1.0825V9A7,7,0,0,0,4,9V23a6.999,6.999,0,0,0,12.2855,4.5878A7.9969,7.9969,0,1,0,22,14Zm0,2a6.0046,6.0046,0,0,1,5.91,5H16.09A6.0046,6.0046,0,0,1,22,16ZM6,9A5,5,0,0,1,16,9v6H6Zm5,19a5.0059,5.0059,0,0,1-5-5V17h9.765a7.9566,7.9566,0,0,0-.7242,8.9315A4.9885,4.9885,0,0,1,11,28Zm11,0a6.0046,6.0046,0,0,1-5.91-5H27.91A6.0046,6.0046,0,0,1,22,28Z" transform="translate(0 0)"/></svg>