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/intent-request-heal.svg

@@ -0,0 +1,8 @@
+<!-- Generator: Adobe Illustrator 25.4.1, 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="M27,20c-0.8,0-1.5,0.3-2.1,0.9l-0.4,0.5l-0.4-0.5C23.5,20.3,22.7,20,22,20s-1.5,0.3-2.1,0.9c-1.2,1.2-1.2,3.1,0,4.3l4.6,4.8 l4.6-4.8c1.2-1.2,1.2-3.1,0-4.3C28.6,20.3,27.8,20,27,20L27,20z"/>
+<path d="M16.6,28.6L4,16L16,4l12.6,12.6l1.4-1.4L17.5,2.6c-0.8-0.8-2.1-0.8-2.9,0L2.6,14.5c-0.8,0.8-0.8,2.1,0,2.9L15.1,30 L16.6,28.6z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__589_" class="st0" width="32" height="32"/>
+</svg>