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/pet-image-B.svg

@@ -0,0 +1 @@
+<svg id="icon" viewBox="0 0 32 32"><title>watson-health--pet-image-B</title><rect class="cls-1" x="19" y="21" width="2" height="3"/><rect class="cls-1" x="19" width="2" height="3"/><rect class="cls-1" x="8" y="11" width="3" height="2"/><rect class="cls-1" x="29" y="11" width="3" height="2"/><rect class="cls-1" x="11.59" y="3.07" width="1.98" height="3" transform="translate(0.45 10.24) rotate(-45)"/><rect class="cls-1" x="26.44" y="17.92" width="1.98" height="3" transform="translate(-5.69 25.08) rotate(-45)"/><rect class="cls-1" x="11.09" y="18.42" width="3" height="1.98" transform="translate(-10.04 14.59) rotate(-45)"/><rect class="cls-1" x="25.93" y="3.58" width="3" height="1.98" transform="translate(4.8 20.73) rotate(-45)"/><path class="cls-1" d="M20,5a7,7,0,1,0,7,7A7,7,0,0,0,20,5Zm0,12A5,5,0,0,1,20,7Z"/><path class="cls-1" d="M5,18H0V32H5a3,3,0,0,0,3-3V27a3,3,0,0,0-.78-2A3,3,0,0,0,8,23V21A3,3,0,0,0,5,18ZM2,20H5a1,1,0,0,1,1,1v2a1,1,0,0,1-1,1H2Zm4,9a1,1,0,0,1-1,1H2V26H5a1,1,0,0,1,1,1Z"/><polygon class="cls-1" points="2 2 9 2 9 0 0 0 0 9 2 9 2 2"/></svg>