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--atx-office.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 id="ibm--atx-office" d="M30,28.3604H2c-.1987,0-.3599-.1611-.3599-.3604V7c0-.1074.0479-.209.1304-.2773l2.6396-2.1826c.8931-.6909,1.9834-.9917,3.0806-.8486l10.5747,1.9546c.1709.0317.2949.1807.2949.354v1.6401h1.2793v-1.6401c0-.103.0449-.2017.1221-.27.0781-.0679.1748-.0967.2832-.0874l8,1c.1797.0229.3154.1758.3154.3574v11c0,.0957-.0381.1875-.1055.2549-.0684.0674-.1592.1055-.2549.1055h0l-.6396-.001v1.2803h2.6396c.1992,0,.3604.1611.3604.3604v8c0,.1992-.1611.3604-.3604.3604ZM20.3604,27.6396h9.2793v-1.2793h-9.2793v1.2793ZM18.3604,27.6396h1.2793v-7.6396c0-.1992.1611-.3604.3604-.3604h.6396v-1.2803l-.6396.001h0c-.0957,0-.1865-.0381-.2549-.1055-.0674-.0674-.1055-.1592-.1055-.2549v-9.6401h-1.2793v19.2798ZM16.3599,27.6396h1.2798V6.2993l-1.2798-.2363v21.5767ZM14.3599,27.6396h1.2803V5.9297l-1.2803-.2368v21.9468ZM12.3599,27.6396h1.2803V5.5601l-1.2803-.2368v22.3164ZM10.3599,27.6396h1.2803V5.1899l-1.2803-.2363v22.686ZM8.3599,27.6396h1.2803V4.8203l-1.2803-.2368v23.0562ZM6.3599,27.6396h1.2803V4.4507l-.2607-.0483c-.3413-.0435-.6846-.0342-1.0195.0269v23.2104ZM4.3599,27.6396h1.2803V4.6445c-.2744.1162-.5366.269-.7803.4575l-.5.4136v22.124ZM2.3599,27.6396h1.2803V6.1108l-1.2803,1.0586v20.4702ZM20.3604,25.6396h9.2793v-1.2793h-9.2793v1.2793ZM20.3604,23.6396h9.2793v-1.2793h-9.2793v1.2793ZM20.3604,21.6396h9.2793v-1.2793h-9.2793v1.2793ZM25.3604,19.6396h1.2793v-1.2803l-1.2793-.001v1.2812ZM23.3604,19.6396h1.2793v-1.2812l-1.2793-.001v1.2822ZM21.3604,19.6396h1.2793v-1.2822l-1.2793.001v1.2812ZM26.3604,17.6387l1.2793.001V7.3179l-1.2793-.1602v10.481ZM20.3604,6.4077v11.2319l1.2793-.001V6.5679l-1.2793-.1602ZM24.3604,17.6377l1.2793.001V7.0679l-1.2793-.1602v10.73ZM22.3604,6.6577v10.98l.5469-.001.7324.001V6.8179l-1.2793-.1602Z"/>
+  <rect id="Transparent_Rectangle" data-name="Transparent Rectangle" class="cls-1" width="32" height="32"/>
+</svg>