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/ibm--rpa.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 25.4.1, 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="ibm--rpa_00000016775007639355259840000012248988277232533946_" d="M13,10c0,0.552-0.448,1-1,1s-1-0.448-1-1s0.448-1,1-1
+	S13,9.448,13,10z M20,9c-0.552,0-1,0.448-1,1s0.448,1,1,1s1-0.448,1-1S20.552,9,20,9z M28.36,31h-0.72V20.36H4.36V31H3.64V20
+	c0-0.199,0.161-0.36,0.36-0.36h8.64v-2.28H8c-0.199,0-0.36-0.161-0.36-0.36v-6.64H5V9.64h2.64V5c0-0.199,0.161-0.36,0.36-0.36h3.64
+	V1h0.72v3.64h7.28V1h0.721v3.64H24c0.199,0,0.36,0.161,0.36,0.36v4.64H27v0.72h-2.64V17c0,0.199-0.161,0.36-0.36,0.36h-4.64v2.279
+	H28c0.199,0,0.36,0.161,0.36,0.36V31z M13.36,19.64h5.28v-2.28h-5.28C13.36,17.36,13.36,19.64,13.36,19.64z M8.36,16.64h15.28V5.36
+	H8.36V16.64z"/>
+<rect id="_Transparent_Rectangle" style="fill:none;" width="32" height="32"/>
+</svg>