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/network-time-protocol.svg

@@ -0,0 +1,2 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M18.8,27c-.3-.9-1-1.5-1.8-1.8v-3.2c5-.5,9-4.8,9-9.9S21.5,2.1,16,2.1,6,6.5,6,12s3.9,9.5,9,10v3.2c-.9.3-1.5,1-1.8,1.8H4v2h9.2c.4,1.2,1.5,2,2.8,2s2.4-.8,2.8-2h9.2v-2h-9.2ZM8,12c0-4.4,3.6-8,8-8s8,3.6,8,8-3.6,8-8,8-8-3.6-8-8ZM16,29c-.6,0-1-.5-1-1s.4-1,1-1,1,.5,1,1-.5,1-1,1ZM19.3,16.7l-4.3-4.3v-6.4h2v5.6l3.7,3.7s-1.4,1.4-1.4,1.4Z"/> <rect id="_x3C_Transparent_Rectangle" class="cls-1" width="32" height="32"/>
+</svg>