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-create.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>
+<polygon points="30,24 26,24 26,20 24,20 24,24 20,24 20,26 24,26 24,30 26,30 26,26 30,26 "/>
+<path d="M15.4,30L5,23.8c-0.6-0.4-1-1-1-1.7V9.9c0-0.7,0.4-1.4,1-1.7l10-5.9C15.3,2.1,15.6,2,16,2c0.4,0,0.7,0.1,1,0.3l10,5.9 c0.6,0.4,1,1,1,1.7V16h-2V9.9L16,4L6,9.9v12.2l10.5,6.2L15.4,30z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__589_" class="st0" width="32" height="32"/>
+</svg>