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-ansible-community.svg

@@ -0,0 +1,7 @@
+<!-- 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>
+<path d="M27.8,27.7L17.5,3.1C17.2,2.4,16.6,2,15.9,2c-0.7,0-1.3,0.4-1.6,1.1L3,30h3.9l4.5-11.1l13.3,10.7c0.5,0.4,0.9,0.6,1.4,0.6 c1,0,1.9-0.7,1.9-1.8C28,28.2,27.9,28,27.8,27.7z M15.9,7.5l6.7,16.4L12.5,16L15.9,7.5z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__363_" class="st0" width="32" height="32"/>
+</svg>