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-pictograms/ibm--aptio.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32">
+  <defs>
+    <style>
+      .cls-1 {
+        fill: none;
+      }
+    </style>
+  </defs>
+  <path d="M20,20.3604h-2c-.1992,0-.3604-.1611-.3604-.3604v-2c0-.1992.1611-.3604.3604-.3604h2c.1992,0,.3604.1611.3604.3604v2c0,.1992-.1611.3604-.3604.3604ZM18.3604,19.6396h1.2793v-1.2793h-1.2793v1.2793ZM25,20.3604h-2c-.1992,0-.3604-.1611-.3604-.3604v-2c0-.1992.1611-.3604.3604-.3604h2c.1992,0,.3604.1611.3604.3604v2c0,.1992-.1611.3604-.3604.3604ZM23.3604,19.6396h1.2793v-1.2793h-1.2793v1.2793ZM20,25.3604h-2c-.1992,0-.3604-.1611-.3604-.3604v-2c0-.1992.1611-.3604.3604-.3604h2c.1992,0,.3604.1611.3604.3604v2c0,.1992-.1611.3604-.3604.3604ZM18.3604,24.6396h1.2793v-1.2793h-1.2793v1.2793ZM25,25.3604h-2c-.1992,0-.3604-.1611-.3604-.3604v-2c0-.1992.1611-.3604.3604-.3604h2c.1992,0,.3604.1611.3604.3604v2c0,.1992-.1611.3604-.3604.3604ZM23.3604,24.6396h1.2793v-1.2793h-1.2793v1.2793ZM20,30.3604h-2c-.1992,0-.3604-.1611-.3604-.3604v-2c0-.1992.1611-.3604.3604-.3604h2c.1992,0,.3604.1611.3604.3604v2c0,.1992-.1611.3604-.3604.3604ZM18.3604,29.6396h1.2793v-1.2793h-1.2793v1.2793ZM30,20.3604h-2c-.1992,0-.3604-.1611-.3604-.3604v-2c0-.1992.1611-.3604.3604-.3604h2c.1992,0,.3604.1611.3604.3604v2c0,.1992-.1611.3604-.3604.3604ZM28.3604,19.6396h1.2793v-1.2793h-1.2793v1.2793ZM16.3599,16V2h-.7197v13.6401H2v.7197h14c.1987,0,.3599-.1611.3599-.3599ZM11.3599,11v-6h-.7197v5.6401h-5.6401v.7197h6c.1987,0,.3599-.1611.3599-.3599Z"/>
+  <rect id="Transparent_Rectangle" data-name="Transparent Rectangle" class="cls-1" width="32" height="32"/>
+</svg>