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/logo-linkedin.svg

@@ -0,0 +1,7 @@
+<!-- Generator: Adobe Illustrator 25.2.3, 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>
+<path d="M26.2,4H5.8C4.8,4,4,4.8,4,5.7v20.5c0,0.9,0.8,1.7,1.8,1.7h20.4c1,0,1.8-0.8,1.8-1.7V5.7C28,4.8,27.2,4,26.2,4z M11.1,24.4 H7.6V13h3.5V24.4z M9.4,11.4c-1.1,0-2.1-0.9-2.1-2.1c0-1.2,0.9-2.1,2.1-2.1c1.1,0,2.1,0.9,2.1,2.1S10.5,11.4,9.4,11.4z M24.5,24.3 H21v-5.6c0-1.3,0-3.1-1.9-3.1c-1.9,0-2.1,1.5-2.1,2.9v5.7h-3.5V13h3.3v1.5h0.1c0.5-0.9,1.7-1.9,3.4-1.9c3.6,0,4.3,2.4,4.3,5.5V24.3z "/>
+<rect id="_x3C_Transparent_Rectangle_x3E_" y="0" class="st0" width="32" height="32"/>
+</svg>