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/it--infrastructure.svg

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 29.1.0, SVG Export Plug-In . SVG Version: 9.03 Build 55587)  -->
+<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="it--infrastructure_00000039842824042947264090000017633733281866732723_" d="M31,31.36h-8c-0.199,0-0.36-0.161-0.36-0.36
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+	c0-1.867,1.543-2.36,2.36-2.36c0.167-0.001,1.64-0.059,1.64-1.64V9.36H5C4.801,9.36,4.64,9.199,4.64,9V1
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+	C31.36,31.199,31.199,31.36,31,31.36z M23.36,30.64h7.279v-7.28H23.36V30.64z M1.36,30.64h7.28v-7.28H1.36V30.64z M9.36,26.64h13.28
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+</svg>