Added official examples from github.com/modular/modular:
- gpu-intro, gpu-functions, gpu-block-and-warp (GPU programming)
- layout_tensor, layouts (tensor operations)
- life (Conway's Game of Life)
- operators (custom operators)
- process (subprocess handling)
- python-interop (Python integration)
- testing (unit test patterns)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
