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/carbon-for-ibm-product.svg

@@ -0,0 +1,10 @@
+<!-- Generator: Adobe Illustrator 25.4.1, 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="M22.509,12.689l-6-3.55C16.352,9.046,16.176,9,16,9s-0.352,0.046-0.509,0.14l-6,3.55C9.187,12.869,9,13.196,9,13.55v6.9 c0,0.354,0.187,0.681,0.491,0.86l6,3.55C15.648,24.954,15.824,25,16,25s0.352-0.046,0.509-0.14l6-3.55 C22.813,21.131,23,20.804,23,20.45v-6.9C23,13.196,22.813,12.869,22.509,12.689z M21,19.88l-5,2.958l-5-2.958v-5.76l5-2.958l5,2.958 V19.88z"/>
+<path d="M6,20.184V11.07l6.2-3.664l-1.017-1.722L4.491,9.639C4.187,9.819,4,10.146,4,10.5v9.684C2.839,20.598,2,21.698,2,23 c0,1.654,1.346,3,3,3s3-1.346,3-3C8,21.698,7.161,20.598,6,20.184z M5,24c-0.551,0-1-0.448-1-1s0.449-1,1-1s1,0.448,1,1 S5.551,24,5,24z"/>
+<path d="M27,20c-1.654,0-3,1.346-3,3c0,0.353,0.072,0.687,0.185,1.002L16,28.838l-6.404-3.784l-1.017,1.722l6.912,4.084 C15.648,30.954,15.824,31,16,31s0.352-0.046,0.509-0.139l8.96-5.295C25.919,25.835,26.439,26,27,26c1.654,0,3-1.346,3-3 S28.654,20,27,20z M27,24c-0.551,0-1-0.448-1-1s0.449-1,1-1s1,0.448,1,1S27.551,24,27,24z"/>
+<path d="M16,7c0.731,0,1.392-0.273,1.913-0.708L26,11.071V18h2v-7.5c0-0.354-0.187-0.681-0.491-0.861l-8.567-5.062 C18.978,4.39,19,4.198,19,4c0-1.654-1.346-3-3-3s-3,1.346-3,3S14.346,7,16,7z M16,3c0.551,0,1,0.448,1,1s-0.449,1-1,1s-1-0.448-1-1 S15.449,3,16,3z"/>
+<rect id="_x3C_Transparent_Rectangle_x3E__589_" class="st0" width="32" height="32"/>
+</svg>