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-pictograms/ibm--z16--plus-cloud.svg

@@ -0,0 +1,19 @@
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+	 viewBox="0 0 32 32" style="enable-background:new 0 0 32 32;" xml:space="preserve">
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+	V4.36z M12.64,15.64h-1.771l1.771-1.771V15.64z M10.869,10.36h1.771v1.771L10.869,10.36z M10.36,10.869L12.491,13l-2.131,2.131
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+	C9.64,16.869,9.64,21.131,9.64,21.131z M9.64,9.131L7.509,7L9.64,4.869V9.131z M7.36,4.36h1.771L7.36,6.131V4.36z M7.36,7.869
+	L9.131,9.64H7.36V7.869z M7.36,10.36h2.28v5.28H7.36V10.36z M7.36,16.36h1.771L7.36,18.131V16.36z M9.13,21.64H7.36v-1.771
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