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--river.svg

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 24.3.0, 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--river_1_" d="M31,31.36H1c-0.199,0-0.36-0.161-0.36-0.36V1h0.72v9.264l8.419-6.548
+	c0.127-0.097,0.303-0.101,0.433-0.007l10.808,7.86l9.795-5.877c0.112-0.067,0.249-0.068,0.363-0.005C31.29,5.75,31.36,5.87,31.36,6
+	v14c0,0.126-0.066,0.243-0.175,0.309l-10,6c-0.124,0.074-0.279,0.067-0.397-0.018L10.007,18.45L1.36,25.176v5.464H31V31.36z
+	 M10,17.64c0.074,0,0.148,0.023,0.212,0.069l10.808,7.859l9.62-5.772v-6.16l-9.454,5.673c-0.124,0.075-0.279,0.068-0.397-0.018
+	L10.007,11.45L1.36,18.176v6.088l8.419-6.548C9.844,17.665,9.922,17.64,10,17.64z M10,10.64c0.074,0,0.148,0.023,0.212,0.069
+	l10.808,7.859l9.62-5.772v-6.16l-9.454,5.673c-0.124,0.075-0.279,0.068-0.397-0.018L10.007,4.45L1.36,11.176v6.087l8.419-6.548
+	C9.844,10.666,9.922,10.64,10,10.64z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>