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/arrows-vertical.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>arrows--vertical</title>
+<polygon points="27.6,20.6 24,24.2 24,4 22,4 22,24.2 18.4,20.6 17,22 23,28 29,22 "/>
+<polygon points="9,4 3,10 4.4,11.4 8,7.8 8,28 10,28 10,7.8 13.6,11.4 15,10 "/> </svg>