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/mobile--add.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 24.1.2, 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="mobile--add_1_" d="M20,28.5c-0.552,0-1-0.448-1-1s0.448-1,1-1s1,0.448,1,1S20.552,28.5,20,28.5z M29.36,31V1
+	c0-0.199-0.161-0.36-0.36-0.36H11c-0.199,0-0.36,0.161-0.36,0.36v2.647c-4.443,0.189-8,3.863-8,8.353s3.557,8.163,8,8.353V31
+	c0,0.199,0.161,0.36,0.36,0.36h18C29.199,31.36,29.36,31.199,29.36,31z M11.36,24.36h17.28v6.279H11.36V24.36z M11.36,20.353
+	c4.443-0.189,8-3.863,8-8.353s-3.557-8.163-8-8.353V1.36h17.28v22.28H11.36V20.353z M18.64,12c0,4.213-3.427,7.64-7.64,7.64
+	S3.36,16.213,3.36,12S6.787,4.36,11,4.36S18.64,7.787,18.64,12z M11.36,12.359H15v-0.72h-3.64V8h-0.72v3.64H7v0.72h3.64V16h0.72
+	C11.36,16,11.36,12.359,11.36,12.359z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>