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/copy-file.svg

@@ -0,0 +1,7 @@
+<!-- Generator: Adobe Illustrator 24.0.3, 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>
+<title>copy--file</title>
+<path d="M27.4,14.7l-6.1-6.1C21,8.2,20.5,8,20,8h-8c-1.1,0-2,0.9-2,2v18c0,1.1,0.9,2,2,2h14c1.1,0,2-0.9,2-2V16.1 C28,15.6,27.8,15.1,27.4,14.7z M20,10l5.9,6H20V10z M12,28V10h6v6c0,1.1,0.9,2,2,2h6l0,10H12z"/>
+<path d="M6,18H4V4c0-1.1,0.9-2,2-2h14v2H6V18z"/> </svg>