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/fetch-upload-cloud.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"><title>fetch-upload--cloud</title><path d="M16,13l-5,5,1.41,1.41L15,16.83V28H6v2h9a2,2,0,0,0,2-2V16.83l2.59,2.58L21,18Z"/><path d="M23.5,22H23V20h.5a4.4975,4.4975,0,0,0,.3564-8.981l-.8154-.0639-.0986-.812a6.9938,6.9938,0,0,0-13.8838,0l-.0991.812-.8155.0639A4.4975,4.4975,0,0,0,8.5,20H9v2H8.5A6.4973,6.4973,0,0,1,7.2,9.1362a8.9943,8.9943,0,0,1,17.6006,0A6.4974,6.4974,0,0,1,23.5,22Z"/></svg>