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/ibm-cloud-security-compliance-center-workload-protection.svg

@@ -0,0 +1,10 @@
+<!-- Generator: Adobe Illustrator 27.3.1, 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="M20,18v6.5c0,1.9,1.1,3.7,2.9,4.5l2.1,1l2.1-1c1.7-0.8,2.9-2.6,2.9-4.5V18H20z M28,24.5c0,1.2-0.7,2.2-1.7,2.7L25,27.8 l-1.3-0.6c-1-0.5-1.7-1.6-1.7-2.7V20h6V24.5z"/>
+<path d="M16,20c-2.2,0-4-1.8-4-4s1.8-4,4-4s4,1.8,4,4h-2c0-1.1-0.9-2-2-2s-2,0.9-2,2s0.9,2,2,2V20z"/>
+<path d="M16,25c-5,0-9-4-9-9s4-9,9-9s9,4,9,9h-2c0-3.9-3.1-7-7-7s-7,3.1-7,7s3.1,7,7,7V25z"/>
+<path d="M16,30C8.3,30,2,23.7,2,16S8.3,2,16,2s14,6.3,14,14h-2c0-6.6-5.4-12-12-12S4,9.4,4,16s5.4,12,12,12V30z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__155_" class="st0" width="32" height="32"/>
+</svg>