add board definition and imu sensor for JFB110

[jfbblue0922]

we are developing JAE flight controllers to be compatible with PX4. we would like to continue development in the future, so we have created a PR.

JFB-110 Flight Controller https://www.jae.com/Motion_Sensor_Control/eVTOL/FlightController/

Added JFB-110 board control function ・add JFB-110 board definition（boards/jfb） ・add external watchdog clear signal output（boards/jfb/jfb110/src） ・add imu sensor SCHA63T（src/drivers/imu/murata）

thank you.

[dagar]

The board support looks good, but could you please explain the io_timer/io_pins change?

There's also a minor merge conflict to resolve.

[dagar]

Minor code style failures in CI. https://github.com/PX4/PX4-Autopilot/actions/runs/9126759801/job/25095670689

[jfbblue0922]

@dagar

Thank you for your advice.

Regarding the PWM IO pin assignment of the JFB110 board, the timer was not continuous, so I changed it.

[jfbblue0922]

I pulled from the latest master and tried to run it on the JFB board, but it became unstable.

Once I can confirm that it works properly, I will make a new PR. This PR will be close. Thank you.