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/fog.svg

@@ -0,0 +1,11 @@
+<?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="fog_1_" d="M30,26.36h-4v-0.72h4V26.36z M22,26.36h-4v-0.72h4V26.36z M14,26.36h-4v-0.72h4V26.36z M6,26.36H2v-0.72h4
+	V26.36z M26,22.36h-4v-0.72h4V22.36z M18,22.36h-4v-0.72h4V22.36z M10,22.36H6v-0.72h4V22.36z M30,18.36h-4v-0.72h4V18.36z
+	 M22,18.36h-4v-0.72h4V18.36z M14,18.36h-4v-0.72h4V18.36z M6,18.36H2v-0.72h4V18.36z M26,14.36h-4v-0.72h4V14.36z M18,14.36h-4
+	v-0.72h4V14.36z M10,14.36H6v-0.72h4V14.36z M30,10.36h-4V9.64h4V10.36z M22,10.36h-4V9.64h4V10.36z M14,10.36h-4V9.64h4V10.36z
+	 M6,10.36H2V9.64h4V10.36z M26,6.36h-4V5.64h4V6.36z M18,6.36h-4V5.64h4V6.36z M10,6.36H6V5.64h4V6.36z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>