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/electric--charge.svg

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 24.1.2, 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="electric--charge_1_" d="M7.312,21.376l-0.624-0.359l2.688-4.657H6c-0.128,0-0.248-0.068-0.312-0.18
+	c-0.064-0.111-0.064-0.249,0-0.36l3-5.196l0.624,0.36L6.624,15.64H10c0.128,0,0.248,0.068,0.312,0.18
+	c0.064,0.111,0.064,0.249,0,0.36L7.312,21.376z M15.36,31V6.377c1.838,0.182,3.28,1.737,3.28,3.623v11c0,2.404,1.956,4.36,4.36,4.36
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+	c0,2.283,1.764,4.162,4,4.345V21c0,2.007-1.633,3.64-3.64,3.64s-3.64-1.633-3.64-3.64V10c0-2.283-1.764-4.162-4-4.345V3
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+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>