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/pen.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M27.3069,6.1069,30,3.4141,28.5859,2,25.8931,4.6929,24.8,3.6a1.9328,1.9328,0,0,0-2.8,0L4,21.6V28h6.4l18-18a1.9329,1.9329,0,0,0,0-2.8ZM9.6,26H6V22.4L23.4,5,27,8.6Z"/> <rect x="8.1359" y="7.5001" width="10.7281" height="1.9998" transform="translate(-2.0563 12.0355) rotate(-45)"/> </svg>