I2C: Modifies SensorEvent generic's version, sensor_id, type, and timestamp to become optional fields
I2C: Adds I2CSensorEvent wrapper message to contain an I2C sensor's address and the sensor event (maybe repeated eventually to pack events, for now, this is a single field)
Signal: Adds SensorEvent wrapper message, one event per sensor peripheral type.
SensorEventgeneric'sversion,sensor_id,type, andtimestampto become optional fieldsI2CSensorEventwrapper message to contain an I2C sensor's address and the sensor event (mayberepeatedeventually to pack events, for now, this is a single field)SensorEventwrapper message, oneeventper sensor peripheral type.cc @lorennorman 👀