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/checkmark-filled.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M16,2A14,14,0,1,0,30,16,14,14,0,0,0,16,2ZM14,21.5908l-5-5L10.5906,15,14,18.4092,21.41,11l1.5957,1.5859Z"/> <polygon id="inner-path" class="cls-1" points="14 21.591 9 16.591 10.591 15 14 18.409 21.41 11 23.005 12.585 14 21.591"/> </svg>