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/airport-location.svg

@@ -0,0 +1 @@
+<svg id="Layer_1" data-name="Layer 1" width="32" height="32" viewBox="0 0 32 32"> <path d="M30,15h-6.07A8.0076,8.0076,0,0,0,17,8.0693V2H15V8.0693A8.0076,8.0076,0,0,0,8.07,15H2v2H8.07A8.0076,8.0076,0,0,0,15,23.9307V30h2V23.9307A8.0076,8.0076,0,0,0,23.9305,17H30ZM16,22a6,6,0,1,1,6-6A6.0066,6.0066,0,0,1,16,22Z" transform="translate(0 0)"/> </svg>