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/cics--performance-analyzer-for-z-os.svg

@@ -0,0 +1,12 @@
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+<!-- Generator: Adobe Illustrator 28.0.0, 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="cics--performance-analyzer-for-z-os_00000071542420008140525810000012305864388311982471_" d="M30,30.36H4
+	c-1.301,0-2.36-1.059-2.36-2.36V2h0.72v26c0,0.904,0.736,1.64,1.64,1.64h4.64V14h0.72v15.64h6.28V23h0.72v6.64h6.28V20h0.721v9.64
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