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/carbon--for-ibm-dotcom.svg

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 27.2.0, 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="carbon--for-ibm-dotcom" d="M4,2.5C4,2.776,3.776,3,3.5,3S3,2.776,3,2.5S3.224,2,3.5,2S4,2.224,4,2.5z M5.5,2
+	C5.224,2,5,2.224,5,2.5S5.224,3,5.5,3S6,2.776,6,2.5S5.776,2,5.5,2z M7.5,2C7.224,2,7,2.224,7,2.5S7.224,3,7.5,3S8,2.776,8,2.5
+	S7.776,2,7.5,2z M23.681,31.312l7.5-4.336c0.11-0.064,0.18-0.183,0.18-0.312v-8.672c0-0.129-0.069-0.247-0.18-0.312l-7.5-4.336
+	c-0.113-0.064-0.248-0.064-0.361,0l-7.5,4.336c-0.111,0.064-0.18,0.183-0.18,0.312v8.672c0,0.129,0.068,0.247,0.18,0.312l7.5,4.336
+	c0.057,0.032,0.118,0.049,0.181,0.049S23.624,31.344,23.681,31.312z M16.36,18.2l7.14-4.128l7.14,4.128v8.256l-7.14,4.128
+	l-7.14-4.128V18.2z M13,22.64H1.36V4.36h29.28V15h0.721V1c0-0.199-0.161-0.36-0.36-0.36H1C0.801,0.64,0.64,0.801,0.64,1v22
+	c0,0.199,0.161,0.36,0.36,0.36h12V22.64z M1.36,1.36h29.28v2.28H1.36V1.36z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>