Submission - New Leveling System DGNs

John Friede of HWH submits the following new DGNs:

LEVELING_SENSOR_ROLL_CONFIG_COMMAND
LEVELING_SENSOR_ROLL_CONFIG_STATUS
LEVELING_SENSOR_PITCH_CONFIG_COMMAND
LEVELING_SENSOR_PITCH_CONFIG_STATUS

Justification: These are required for configuring the warning levels for the leveling status messages.