Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Remove BatteryFactGroup::cellCount support

Handle unreliable PX4 support of BATTERY_STATUS

Switch to using BATTERY_STATUS for battery info

This was lost when moving the handling the the trajectory points from within the vehicle.

Allow plugin to add flight modes to joystick button actions

Fix distance sensor telemetry reading

ADSB server support provided through new ADSBVehicleManager implemenation

Fix flight timer

Better flight trajectory point algorithm

Plugin'ized follow me support

Enable ArduPilot motor testing

Support up to 64 buttons, not limit to 16
Send a single button command and not a stream of commands at 25Hz
Send button commands through signals (it's coming from a different thread)
Hide gimbal support through analog channels (there are no MAVLink messages to handle it)

Map gimbal controls
Keep track of gimbal position within Vehicle

Add gimbal to external control signal

Instead of trying to keep a vehicle type within the FirmwarePlugin instance, pass the vehicle to the function so it can query the type that way.

Fix mavlink version negotiation for single vehicle

Add Throttle % as vehicle fact

Save/Restore stream rates. Auto flight mode support

PID tuning rate adjustment

Smart RTL support

Support STATUSTEXT_LONG

Remove the concept of reserved buttons for manual control

Add gotoFlightMode property