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/term-reference.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <polygon class="cls-2" points="4 20 4 22 8.586 22 2 28.586 3.414 30 10 23.414 10 28 12 28 12 20 4 20"/> <path class="cls-2" d="m28,25h-3v-2h3V7h-3v-2h3c1.1025,0,2,.897,2,2v16c0,1.1025-.8975,2-2,2Z"/> <circle class="cls-2" cx="23" cy="15" r="2"/> <circle class="cls-2" cx="16" cy="15" r="2"/> <circle class="cls-2" cx="9" cy="15" r="2"/> <path class="cls-2" d="m4,17V7h3v-2h-3c-1.103,0-2,.897-2,2v10h2Z"/> </svg>