docs: add modern architecture diagram v2 (SVG)

- Clean, modern visual design with gradients and shadows
- All 7 core modules: Capture, State, Replay, GDB, Common, Format, Cluster
- Complete backend layer: CUDA, MACA, Metal, Ascend, NCCL, profilers
- Output formats: SBT, Perfetto JSON/Proto, Graphviz, ASCII, Comm Matrix
- Configuration section with all config types
- Data flow arrows between modules
- Version 0.10.0 with GDB integration

Author: chenxingqiang