1.fixed the problem of setting the gimbal mode abnormally when the gimbal is not rotated.
2.fixed the waypoint v2 mission state enum description error.
3.fixed the problem that large-capacity video download fails on M30/M30T.
4.added the api doc for uart available baudrate list.
5.added the enum defines for single smart battery info.
Signed-off-by: DJI-Martin <DJI-Martin@dji.com>
