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/lowering-risk.svg

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 26.3.1, 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="lowering-risk_00000008147628947379133110000005385068396880254623_" d="M14,19.5c-0.276,0-0.5-0.224-0.5-0.5
+	s0.224-0.5,0.5-0.5s0.5,0.224,0.5,0.5S14.276,19.5,14,19.5z M31.36,24c0,4.059-3.302,7.36-7.36,7.36s-7.36-3.302-7.36-7.36
+	c0-0.216,0.009-0.429,0.027-0.64H1c-0.129,0-0.249-0.069-0.312-0.182c-0.064-0.112-0.063-0.251,0.002-0.362l13-22
+	c0.13-0.22,0.49-0.22,0.62,0l9.355,15.831c0.11-0.005,0.223-0.007,0.335-0.007C28.059,16.64,31.36,19.941,31.36,24z M16.766,22.64
+	c0.572-3.048,3.028-5.438,6.109-5.914L14,1.708L1.631,22.64H16.766z M30.64,24c0-3.661-2.979-6.64-6.64-6.64s-6.64,2.979-6.64,6.64
+	s2.979,6.64,6.64,6.64S30.64,27.661,30.64,24z M13.64,17h0.72V8h-0.72V17z M24.36,26.131V20h-0.72v6.131l-2.385-2.386l-0.51,0.51
+	L24,27.509l3.255-3.254l-0.51-0.51L24.36,26.131z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>