work-around for https://github.com/PX4/Firmware/issues/9461

Both IO and FMU are connected to the safety switch for default models. This needs later to be broken out to a config option for builds that do not contain an IO.

Subsystem_info status flags & checks: Add comment to indicate that the IMU+MAG consistency checks need to be performed AFTER the individual checks are complete

Subsystem_info status flags & checks: Suppress sensor failover warnings in Hardware in the loop (HITL)

Subsystem_info status flags & checks: Moved the set_health_flags helper functions out of the /lib/ folder and into the module/commander folder because they are actually only needed there

Subsystem_info status flags & checks: Code style fixes and cleanup to avoid strcmp() as suggested by @LorenzMeier

Subsystem_info status flags & checks: Separate the functionality to a) set the health flags inside commander and b) to publish them from external modules

Remove distance sensor checks again. These checks should be handled by EKF2 and should thus be added there later

vl53lxx distance sensor: Remove subsystem_info calls because all sensors are now checked inside commander

Subsystem_info status flags & checks: 1) Set health flags in commander directly instead of publishing via uORB 2) move publish_subsystem_info into lib/ folder"

Subsystem_info status flags & checks: Switch back to uORB for inter-process communication, handle GPS checks completely inside ekf2, add distance_sensor checks

Subsystem_info status flags & checks : Initial commit, updating the health flags in a centralized way mostly in commander and the votedSensorsUpdate function.