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-hyper-protect-dbaas.svg

@@ -0,0 +1,11 @@
+<!-- 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="M24,30l-2.1-1c-1.7-0.8-2.9-2.6-2.9-4.5V18h10v6.5c0,1.9-1.1,3.7-2.9,4.5L24,30z M21,20v4.5c0,1.2,0.7,2.2,1.7,2.7l1.3,0.6 l1.3-0.6c1-0.5,1.7-1.6,1.7-2.7V20H21z"/>
+<circle cx="10" cy="23" r="1"/>
+<circle cx="10" cy="15" r="1"/>
+<circle cx="10" cy="7" r="1"/>
+<path d="M23,2H7C5.9,2,5,2.9,5,4v22c0,1.1,0.9,2,2,2h9v-2H7v-6h9v-2H7v-6h16v3h2V4C25,2.9,24.1,2,23,2z M7,10V4h16v6H7z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__232_" y="0" class="st0" width="32" height="32"/>
+</svg>