c93fe81592
- Implemented `upload_ffat.py` script to create and flash FFat images for the A252 board. - Added hardware specifications for the A252 board in `SKILL.md`, detailing memory, DIP semantics, and canonical pin mapping. - Introduced audio chain verification skill in `rtc-a252-audio-chain-verificator/SKILL.md` for diagnosing audio playback issues. - Created `ToneCatalog` for managing audio tones, including definitions for various tone events and profiles. - Defined board pin mappings in `a1s_board_pins.h` for the ESP32-A1S module. - Established media routing structures and functions in `MediaRouting.h` to handle audio playback sources and tone events.