Add new boards ZeroOne_Air flight controller

[ZeroOne-Aero]

AP_HAL_ChibiOS: Added support for ZeroOne_Air flight controller

[Hwurzburg]

@ZeroOne-Aero this is going to need a bootloader in Tools/bootloaders
just a quick scan, not a detailed review: use the board test name instead of board number and use it as the folder names so that board naming is consistent ie ZeroOne_X6 rather than ZeroOneX6_Air or change the build_types name ZeroOneX6_Air

When you are ready I will review

[ZeroOne-Aero]

@Hwurzburg Thank you very much for your reply during the holidays, we will add a bootloader in Tools/bootloaders later, ZeroOneX6_Air is the name of our new board, I don't fully understand what build_types name means