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/snow-scattered-night.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>snow--scattered--night</title><rect x="2" y="26" width="2" height="2"/><rect x="4" y="28" width="2" height="2"/><rect x="6" y="30" width="2" height="2"/><rect x="6" y="26" width="2" height="2"/><rect x="2" y="30" width="2" height="2"/><rect x="20" y="26" width="2" height="2"/><rect x="22" y="28" width="2" height="2"/><rect x="24" y="30" width="2" height="2"/><rect x="24" y="26" width="2" height="2"/><rect x="20" y="30" width="2" height="2"/><rect x="11" y="26" width="2" height="2"/><rect x="13" y="28" width="2" height="2"/><rect x="15" y="30" width="2" height="2"/><rect x="15" y="26" width="2" height="2"/><rect x="11" y="30" width="2" height="2"/><path d="M29.8439,13.0347a1.517,1.517,0,0,0-1.23-.8658,5.3552,5.3552,0,0,1-3.4095-1.7158,6.4655,6.4655,0,0,1-1.286-6.3926,1.6025,1.6025,0,0,0-.2989-1.5459,1.4543,1.4543,0,0,0-1.36-.4931l-.0191.0039a7.7685,7.7685,0,0,0-5.8847,5.5737A7.3706,7.3706,0,0,0,13.5,7a7.5511,7.5511,0,0,0-7.1494,5.2441A5.9926,5.9926,0,0,0,8,24H19a6.0066,6.0066,0,0,0,6-6c0-.0571-.0123-.1113-.0139-.1685a7.5076,7.5076,0,0,0,4.7611-3.2768A1.5369,1.5369,0,0,0,29.8439,13.0347ZM19,22H8a3.9926,3.9926,0,0,1-.6733-7.9292l.663-.1128.1456-.6562a5.496,5.496,0,0,1,10.7294,0l.1456.6562.6626.1128A3.9925,3.9925,0,0,1,19,22Zm5.5974-6.1289a5.9661,5.9661,0,0,0-3.948-3.627,7.49,7.49,0,0,0-2.489-3.58,5.9018,5.9018,0,0,1,3.6381-4.4473,8.4577,8.4577,0,0,0,1.94,7.5967A7.4007,7.4007,0,0,0,27.64,14.041,5.4487,5.4487,0,0,1,24.5974,15.8711Z"/></svg>