Dave Allie bd4e670750
[SDCardManager] Use SdFat for exFAT support (#10)
- Migrate over to SdFat for exFAT support
- Add new utilities:
  - `openFileForWrite`
  - `openFileForRead`
  - `removeDir`
- Sets up a singleton and macro to access it (`SdMan`)
2025-12-30 16:02:18 +11:00
..
2025-12-02 19:16:50 +11:00