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/chart--two-y-axis.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 26.1.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 32 32" style="enable-background:new 0 0 32 32;" xml:space="preserve">
+<path id="chart--two-y-axis_00000139272374225272350690000009736411298986983356_" d="M19,17.64h8v0.721h-7.851l-6.895,6.895
+	C12.187,25.322,12.096,25.36,12,25.36H5v-0.72h6.851l6.894-6.895C18.812,17.678,18.904,17.64,19,17.64z M5,14.36h7
+	c0.096,0,0.187-0.038,0.254-0.105l6.895-6.895H27V6.64h-8c-0.096,0-0.188,0.038-0.255,0.105l-6.894,6.895H5V14.36z M31.255,2.746
+	L29,0.491l-2.255,2.255l0.51,0.509L28.64,1.87v28.77H3.36V1.869l1.386,1.385l0.509-0.509L3,0.491L0.746,2.746l0.509,0.509
+	L2.64,1.869V31c0,0.199,0.161,0.36,0.36,0.36h26c0.199,0,0.36-0.161,0.36-0.36V1.87l1.385,1.385L31.255,2.746z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>