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/subnet-acl-rules.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <rect x="18" y="14" width="12" height="2"/> <rect x="18" y="19" width="8" height="2"/> <rect x="18" y="9" width="12" height="2"/> <path d="M22,24v4H6V16h8V14H10V8a4.0008,4.0008,0,0,1,7.6675-1.6L19.5005,5.6A6.001,6.001,0,0,0,8,8v6H6a2.0023,2.0023,0,0,0-2,2V28a2.0023,2.0023,0,0,0,2,2H22a2.0023,2.0023,0,0,0,2-2V24Z" transform="translate(0 0)"/> </svg>