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/traffic-cone.svg

@@ -0,0 +1 @@
+<svg id="Layer_1" data-name="Layer 1" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-1" d="M24.7957,28,18.9746,2.7754A1,1,0,0,0,18,2H14a1,1,0,0,0-.9746.7754L7.2043,28H4v2H28V28ZM19.9736,16H12.0264l.9229-4h6.1014Zm.4616,2,.923,4H10.6418l.923-4Zm-5.64-14h2.4092l1.3845,6H13.4109ZM10.18,24H21.82l.923,4H9.2573Z" transform="translate(0 0)"/> </svg>