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/direction-rotary-straight.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <title>direction--rotary--straight</title> <path d="M17,12.09V5.8281l4.5859,4.586L23,9,16,2,9,9l1.4141,1.4141L15,5.8281V12.09A5.9925,5.9925,0,0,0,15,23.91V28h2V23.91A5.9925,5.9925,0,0,0,17,12.09ZM16,22a4,4,0,1,1,4-4A4.0045,4.0045,0,0,1,16,22Z"/> </svg>