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/hexagon-vertical-solid.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-2" d="m16.5513,30.8508l11.9165-6.9641c.3301-.1926.5322-.5437.5322-.9224v-13.9287c0-.3787-.2021-.7297-.5322-.9224L16.5513,1.1492c-.3403-.199-.7622-.199-1.1025,0L3.5322,8.1133c-.3301.1926-.5322.5437-.5322.9224v13.9287c0,.3787.2021.7297.5322.9224l11.9165,6.9641c.3403.199.7622.199,1.1025,0Z"/> </svg>