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/c--language.svg

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 24.3.0, 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">
+<g id="c--language">
+	<path id="c--language_1_" d="M31,31.36H1v-0.72h30V31.36z M31.36,24V1c0-0.199-0.161-0.36-0.36-0.36H1
+		C0.801,0.64,0.64,0.801,0.64,1v23c0,0.199,0.161,0.36,0.36,0.36h30C31.199,24.36,31.36,24.199,31.36,24z M1.36,1.36h29.28v22.28
+		H1.36V1.36z M16.402,17.169c1.624,0,2.815-0.854,3.432-2.228l-0.939-0.588c-0.393,1.064-1.246,1.765-2.493,1.765
+		c-1.682,0-2.676-1.219-2.676-3.222V11.44c0-2.004,0.994-3.334,2.676-3.334c1.204,0,2.016,0.658,2.409,1.667l0.953-0.574
+		c-0.617-1.359-1.738-2.144-3.362-2.144c-2.466,0-3.937,1.849-3.937,5.112C12.465,15.433,13.936,17.169,16.402,17.169z"/>
+</g>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>