- rcS parameter backup try to directly restore param (FRAM) from backup (in case SD card is removed before successful export)
- rcS parameter backup logging rearrange to capture more logging output (param_import_fail.txt)
- posix rcS try to keep param backup and restore roughly in sync with NuttX rcS
- tinybson fix debug printf format
- param_export_internal ensure file descriptor positioned at 0 (precaution)
- generate PWM_MAIN 1-14
- generate PWM_AUX 1-8
- generate PWM_EXTRA 1-8
- px4io and pwm_out directly read configuration parameters
- only available and active physical outputs are actually shown for configuration
- overall saves flash despite adding many new parameters
