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/test-tool.svg

@@ -0,0 +1,10 @@
+<!-- Generator: Adobe Illustrator 26.3.1, 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="23,9.2 20.4,6.6 19,8 23,12 30,5 28.6,3.6 "/>
+<polygon points="12,5.4 10.6,4 8,6.6 5.4,4 4,5.4 6.6,8 4,10.6 5.4,12 8,9.4 10.6,12 12,10.6 9.4,8 "/>
+<polygon points="12,21.4 10.6,20 8,22.6 5.4,20 4,21.4 6.6,24 4,26.6 5.4,28 8,25.4 10.6,28 12,26.6 9.4,24 "/>
+<polygon points="17,15 17,2 15,2 15,15 2,15 2,17 15,17 15,30 17,30 17,17 30,17 30,15 "/>
+<rect id="_x3C_Transparent_Rectangle_x3E__589_" class="st0" width="32" height="32"/>
+</svg>