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/document--security.svg

@@ -0,0 +1,12 @@
+<?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="document--security_1_" d="M24.5,31.36c-3.782,0-6.86-3.078-6.86-6.86V17c0-0.199,0.161-0.36,0.36-0.36h13
+	c0.199,0,0.36,0.161,0.36,0.36v7.5C31.36,28.282,28.282,31.36,24.5,31.36z M18.36,17.36v7.14c0,3.386,2.754,6.14,6.14,6.14
+	s6.14-2.754,6.14-6.14v-7.14H18.36z M16,31.36H1c-0.199,0-0.36-0.161-0.36-0.36V1c0-0.199,0.161-0.36,0.36-0.36h18
+	c0.096,0,0.188,0.038,0.255,0.105l6,6C25.322,6.813,25.36,6.904,25.36,7v7h-0.72V7.36H19c-0.199,0-0.36-0.161-0.36-0.36V1.36H1.36
+	v29.28H16V31.36z M19.36,6.64h4.771L19.36,1.869V6.64z M15,27.36H5v-0.72h10V27.36z M15,23.36H5v-0.72h10V23.36z M15,19.36H5v-0.72
+	h10V19.36z M5,15.36v-0.72h10v0.72H5z M21,11.36H5v-0.72h16V11.36z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>