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-solid.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-2" d="m30.8508,15.4487l-6.9641-11.9165c-.1926-.3301-.5437-.5322-.9224-.5322h-13.9287c-.3787,0-.7297.2021-.9224.5322L1.1492,15.4487c-.199.3403-.199.7622,0,1.1025l6.9641,11.9165c.1926.3301.5437.5322.9224.5322h13.9287c.3787,0,.7297-.2021.9224-.5322l6.9641-11.9165c.199-.3403.199-.7622,0-1.1025Z"/> </svg>