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/previous-filled.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path d="M16,2A14,14,0,1,0,30,16,14,14,0,0,0,16,2Zm8,15H11.85l5.58,5.5728L16,24,8,16l8-8,1.43,1.3926L11.85,15H24Z"/> <polygon id="inner-path" class="cls-1" points="16 8 17.43 9.393 11.85 15 24 15 24 17 11.85 17 17.43 22.573 16 24 8 16 16 8"/> </svg>