new mpu9250 driver using FIFO and raw sampling (8 kHz gyro, 4 kHz accel)

[dagar]

Initially used for vibration analysis. Doesn't include mag support.

Currently needs to be manually enabled and started.

[codecov]

Codecov Report

Merging #14057 into master will decrease coverage by 0.74%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #14057      +/-   ##
==========================================
- Coverage    53.7%   52.95%   -0.75%     
==========================================
  Files         605      605              
  Lines       51348    51366      +18     
==========================================
- Hits        27575    27200     -375     
- Misses      23773    24166     +393

Flag	Coverage Δ
#mavsdk	?
#python	3.22% <ø> (+0.06%)	⬆️
#sitl_mission_FW	100% <ø> (+70.65%)	⬆️
#sitl_mission_MC_box	100% <ø> (+70.22%)	⬆️
#sitl_mission_MC_offboard_att	100% <ø> (+71.76%)	⬆️
#sitl_mission_MC_offboard_pos	100% <ø> (+71.48%)	⬆️
#sitl_mission_Rover	26.22% <ø> (+0.02%)	⬆️
#sitl_mission_VTOL_standard	100% <ø> (+66.06%)	⬆️
#sitl_mission_VTOL_tailsitter	33.95% <ø> (-0.01%)	⬇️
#sitl_python_FW	29.55% <ø> (+0.13%)	⬆️
#sitl_python_MC_box	29.91% <ø> (+0.06%)	⬆️
#sitl_python_MC_offboard_att	28.46% <ø> (+0.15%)	⬆️
#sitl_python_MC_offboard_pos	28.68% <ø> (+0.09%)	⬆️
#sitl_python_Rover	100% <ø> (+73.72%)	⬆️
#sitl_python_VTOL_standard	34.09% <ø> (+0.09%)	⬆️
#sitl_python_VTOL_tailsitter	?
#unittest	34.82% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
src/modules/navigator/takeoff.cpp	3.92% <0%> (-76.48%)	⬇️
src/modules/navigator/rtl.cpp	14.46% <0%> (-44.22%)	⬇️
src/modules/navigator/loiter.cpp	8.16% <0%> (-38.78%)	⬇️
src/modules/mavlink/mavlink_timesync.cpp	72.5% <0%> (-15%)	⬇️
src/modules/navigator/navigator.h	82.5% <0%> (-10%)	⬇️
src/modules/navigator/navigator_main.cpp	45.21% <0%> (-6.96%)	⬇️
src/modules/logger/util.cpp	37.37% <0%> (-5.06%)	⬇️
src/modules/mavlink/mavlink_parameters.cpp	39.67% <0%> (-4.86%)	⬇️
src/modules/navigator/mission_block.cpp	83.09% <0%> (-4.09%)	⬇️
...modules/vtol_att_control/vtol_att_control_main.cpp	76.68% <0%> (-3.59%)	⬇️
... and 20 more