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/timing-belt.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <circle class="cls-2" cx="16" cy="24" r="1"/> <path class="cls-2" d="m30,12c0-1.8237-1.2344-3.3496-2.9062-3.8286L7.2087,2.207c-.3838-.123-.7847-.207-1.2087-.207-2.2056,0-4,1.7944-4,4,0,.6025.1438,1.1689.3835,1.6816l8.1016,18.6782c.9185,2.1382,3.0442,3.6401,5.5149,3.6401,2.252,0,4.2161-1.249,5.2422-3.0889l8.002-12.5894c.4712-.6562.7559-1.4541.7559-2.3218Zm-14,6c-2.4155,0-4.4971,1.438-5.4475,3.5005l-5.0149-11.5474c.1536.0181.3042.0469.4624.0469,2.2056,0,4-1.7944,4-4,0-.3193-.0474-.6255-.1182-.9233l13.3882,4.0161c-.7771.73-1.27,1.7593-1.27,2.9072,0,2.1465,1.7029,3.8896,3.8267,3.9824l-4.0593,6.3809c-.7148-2.5146-3.0271-4.3633-5.7673-4.3633Zm12-6c0,1.1025-.8972,2-2,2s-2-.8975-2-2,.8972-2,2-2,2,.8975,2,2ZM6,4c1.1028,0,2,.8975,2,2s-.8972,2-2,2-2-.8975-2-2,.8972-2,2-2Zm10,24c-2.2056,0-4-1.7944-4-4s1.7944-4,4-4,4,1.7944,4,4-1.7944,4-4,4Z"/> </svg>