Add kagent logos

[craigbox]

trafficstars

• [x] Artwork is supplied in both PNG and SVG formats.
• [x] SVGs are real vector-based files.
• [ ] Artwork includes 3 layouts: horizontal (landscape), stacked, and icon.
  • Project does not currnetly use a stacked logo.
• [x] At least 3 versions of the artwork are provided: color, black, and white.
• [x] Files follow the existing repo folder and naming conventions.
• [x] The correct examples/file.md is updated with a section for the logos added, in A-Z order.
• [x] A link to the new logo section is added to the main README.md, in A-Z order.