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/close-filled.svg

@@ -0,0 +1,6 @@
+<!-- Generator: Adobe Illustrator 23.0.4, 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{opacity:0;} .st1{fill:none;}
+</style>
+<path d="M16,2C8.2,2,2,8.2,2,16s6.2,14,14,14s14-6.2,14-14S23.8,2,16,2z M21.4,23L16,17.6L10.6,23L9,21.4l5.4-5.4L9,10.6L10.6,9 l5.4,5.4L21.4,9l1.6,1.6L17.6,16l5.4,5.4L21.4,23z"/>
+<polyline id="inner-path" class="st0" points="14.4,16 9,10.6 10.6,9 16,14.4 21.4,9 23,10.6 17.6,16 23,21.4 21.4,23 16,17.6 10.6,23 9,21.4 14.4,16 "/> </svg>