- update mavlink, cmake_hexagon, uavcan_board_ident to latest

Update the model for the standard configuration based on the model from Sensirion and add also an option to do the tube pressure loss correction from Sensirion for other configurations.

Adding a seperate cmake config to support RTPS messaging on AeroFC. This will
include compiling protocol_splitter and micrortps_client, and starting both
of them at boot time.

 - this works around cygwin path issues on windows

The fix_type variable in ubx.cpp may be assigned to 4(DGPS) or 5(Float RTK) or 6(Fixed RTK). So if we use differential gps, the value of the fix_type variable may not be 3. But gps still has 3d data and gps time. So The name of the file should named with gps time.My ublox differential gps fix_type is 5 (Float RTK).

According to the board_config.h shown. bmm150 only on the external i2c bus

and make sure the vtol params are always initialized

This got lost in 4416c4dd

Make it clearer that the gate parameters control innovation consistency checks and that the gate size is specified in standard deviations.
Also make it clear that the EKF2_BARO_GATE also controls the GPS height fusion.

mc_pos_control: save previous velocity setpoint after constraining, fix smooth takeoff to be still excluded from slewrate