temperature_calibration: refactor to separate code & reduce code duplication

src/modules/events/CMakeLists.txt

src/modules/events/send_event.cpp

src/modules/events/temperature_calibration/accel.cpp

src/modules/events/temperature_calibration/accel.h

src/modules/events/temperature_calibration/baro.cpp

src/modules/events/temperature_calibration/baro.h

src/modules/events/temperature_calibration/common.h

src/modules/events/temperature_calibration/gyro.cpp

src/modules/events/temperature_calibration/gyro.h

src/modules/events/temperature_calibration/task.cpp

.../events/temperature_calibration/temperature_calibration.h