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/triangle-left-outline.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <path class="cls-2" d="m27.5117,2.1245L3.5249,15.144c-.3438.1865-.5249.5212-.5249.856,0,.3345.1812.6689.5249.8555l23.9868,13.0195c.1582.0862.3257.1255.4883.125.5229-.0017,1-.4114,1-.9805V2.9802c0-.5691-.4771-.9788-1-.9802-.1626-.0005-.3301.0386-.4883.1245Zm-.5117,25.1985L6.1323,16,27,4.677v22.646Z"/> </svg>