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/document-multiple-01.svg

@@ -0,0 +1,11 @@
+<!-- Generator: Adobe Illustrator 27.2.0, 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>
+<rect x="2" y="6" width="2" height="20"/>
+<rect x="6" y="4" width="2" height="24"/>
+<rect x="14" y="22" width="12" height="2"/>
+<rect x="14" y="16" width="12" height="2"/>
+<path d="M29.7,9.3l-7-7C22.5,2.1,22.3,2,22,2H12c-1.1,0-2,0.9-2,2v24c0,1.1,0.9,2,2,2h16c1.1,0,2-0.9,2-2V10 C30,9.7,29.9,9.5,29.7,9.3z M22,4.4l5.6,5.6H22V4.4z M28,28H12V4h8v6c0,1.1,0.9,2,2,2h6V28z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__155_" class="st0" width="32" height="32"/>
+</svg>