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/cics-region-alt.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M31,13v-2h-4c-1.1028,0-2,.8975-2,2v2c0,1.1025,.8972,2,2,2h2v2h-4v2h4c1.1028,0,2-.8975,2-2v-2c0-1.1025-.8972-2-2-2h-2v-2h4Z"/> <path d="M17,13v6c0,1.1025,.8972,2,2,2h4v-2h-4v-6h4v-2h-4c-1.1028,0-2,.8975-2,2Z"/> <polygon points="9 13 11 13 11 19 9 19 9 21 15 21 15 19 13 19 13 13 15 13 15 11 9 11 9 13"/> <path d="M1,13v6c0,1.1025,.8972,2,2,2H7v-2H3v-6H7v-2H3c-1.1028,0-2,.8975-2,2Z"/> </svg>