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/firewall.svg

@@ -0,0 +1,10 @@
+<?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="firewall_1_" d="M28.427,20.917l-0.51,0.51l2.214,2.213H23.36V8.36H31V7.64h-7.64V1c0-0.199-0.161-0.36-0.36-0.36H11
+	c-0.199,0-0.36,0.161-0.36,0.36v30c0,0.199,0.161,0.36,0.36,0.36h12c0.199,0,0.36-0.161,0.36-0.36v-6.64h6.771l-2.214,2.213
+	l0.51,0.51L31.509,24L28.427,20.917z M22.64,30.64H11.36V1.36h11.28v6.28H17v0.72h5.64v15.28H17v0.721h5.64V30.64z M1,23.64h7.616
+	v0.721H1V23.64z M1.869,7.64h6.747v0.72H1.869l2.214,2.214l-0.509,0.509L0.491,8l3.083-3.083l0.509,0.509L1.869,7.64z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>