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/devices-at-ibm.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 26.1.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 32 32" style="enable-background:new 0 0 32 32;" xml:space="preserve">
+<path id="devices-at-ibm_00000006670148603086878310000002620121627034432924_" d="M4.254,31.255l-0.509-0.51l2.918-2.909
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+	c0,0.065-0.003,0.13-0.009,0.194l4.999-4.062c0.663-0.666,1.79-0.667,2.48,0.024c0.692,0.692,0.691,1.818,0.001,2.51l-6.102,6.102
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+</svg>