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/deployment-unit-technical-installation.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <polygon points="17 11 20 11 20 21 17 21 17 23 25 23 25 21 22 21 22 11 25 11 25 9 17 9 17 11"/> <polygon points="7 11 10 11 10 23 12 23 12 11 15 11 15 9 7 9 7 11"/> </svg>