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/unplug.svg

@@ -0,0 +1,2 @@
+<svg id="icon" width="32" height="32" version="1.1" viewBox="0 0 32 32"> <!-- Generator: Adobe Illustrator 30.2.1, SVG Export Plug-In . SVG Version: 2.1.1 Build 1) --> <path d="M28.9,4.4l-1.4-1.4-3,3c-1.9-1.3-4.6-1.1-6.3.6l-3.5,3.5,7.1,7.1,3.5-3.5c1.7-1.7,1.9-4.4.6-6.3,0,0,3-3,3-3ZM23.8,12.3l-2.1,2.1-4.2-4.2,2.1-2.1c1.2-1.2,3.1-1.2,4.2,0,1.2,1.2,1.2,3.1,0,4.2ZM17.7,18.5l-1.4-1.4-1.9,1.9-1.4-1.4,1.9-1.9-1.4-1.4-1.9,1.9-1.4-1.4-3.5,3.5c-1.7,1.7-1.9,4.4-.6,6.3l-3,3,1.4,1.4,3-3c.8.5,1.8.8,2.8.8s2.6-.5,3.5-1.5l3.5-3.5-1.4-1.4,1.9-1.9h-.1ZM12.2,23.9c-1.1,1.1-3.1,1.1-4.2,0-1.2-1.2-1.2-3.1,0-4.2l2.1-2.1,4.2,4.2s-2.1,2.1-2.1,2.1ZM8,14h-4v-2h4v2ZM14,8h-2v-4h2v4ZM28,20h-4v-2h4v2ZM24.6858,25.9l-2.8284-2.8284,1.4142-1.4142,2.8284,2.8284-1.4142,1.4142ZM8.8071,10.0213l-2.8284-2.8284,1.4142-1.4142,2.8284,2.8284-1.4142,1.4142ZM20,28h-2v-4h2v4Z"/> <rect id="__x3C_Transparent_Rectangle_x3E_" class="st0" width="32" height="32"/>
+</svg>