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-plus-plus--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">
+<path id="c-plus-plus--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 M8.003,17.167c1.624,0,2.815-0.854,3.432-2.228l-0.938-0.588c-0.393,1.064-1.247,1.765-2.493,1.765
+	c-1.682,0-2.676-1.219-2.676-3.222v-1.456c0-2.004,0.994-3.334,2.676-3.334c1.204,0,2.017,0.658,2.409,1.667l0.952-0.574
+	c-0.616-1.359-1.737-2.144-3.361-2.144c-2.466,0-3.937,1.849-3.937,5.112C4.066,15.431,5.537,17.167,8.003,17.167z M16.682,16.131
+	v-2.928h2.731V12.25h-2.731V9.323h-1.064v2.927h-2.731v0.953h2.731v2.928H16.682z M25.081,16.131v-2.928h2.731V12.25h-2.731V9.323
+	h-1.064v2.927h-2.731v0.953h2.731v2.928H25.081z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>