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/ibm-cloud-kubernetes-service.svg

@@ -0,0 +1,8 @@
+<!-- Generator: Adobe Illustrator 26.3.1, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
+<svg version="1.1" id="icon" x="0px" y="0px" width="32px" height="32px" viewBox="0 0 32 32" style="enable-background:new 0 0 32 32;" xml:space="preserve">
+<style type="text/css"> .st0{fill:none;}
+</style>
+<path d="M16,23c-0.2,0-0.4,0-0.5-0.1l-5-3C10.2,19.7,10,19.4,10,19v-6c0-0.4,0.2-0.7,0.5-0.9l5-3C15.6,9,15.8,9,16,9 c0.2,0,0.4,0,0.5,0.1l5,3c0.3,0.2,0.5,0.5,0.5,0.9v6c0,0.4-0.2,0.7-0.5,0.9l-5,3C16.4,23,16.2,23,16,23z M12,18.4l4,2.4l4-2.4v-4.9 l-4-2.4l-4,2.4V18.4z"/>
+<path d="M16,31c-0.2,0-0.3,0-0.5-0.1l-12-7C3.2,23.7,3,23.4,3,23V9c0-0.4,0.2-0.7,0.5-0.9l12-7C15.7,1,15.8,1,16,1 c0.2,0,0.3,0,0.5,0.1l12,7l-1,1.7L16,3.2L5,9.6v12.9l11,6.4l11-6.4V15h2v8c0,0.4-0.2,0.7-0.5,0.9l-12,7C16.3,31,16.2,31,16,31z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__589_" class="st0" width="32" height="32"/>
+</svg>