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/feature-membership.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-2" d="m14,28v-9l8-8L13,2,4,11l8,8v9c0,1.1045.8955,2,2,2h14v-2h-14Zm-1-23.1716l6.1716,6.1716-6.1716,6.1716-6.1716-6.1716,6.1716-6.1716Z"/> </svg>