New VehicleLinkManager implementation

Rework to prevent crashes from nullptr returns from getUIInfo/getParamInfo

Fix min/max AMSL alt calc

Landing Pattern: Loiter to alt optional support

Fix incorrect usage of _managerVehicle

QGCFileDialog remove separate mobile fileExtension properties

For VTOL and FW set default landing heading to takeoff heading when TakeoffMissionItem is added in PlanView

Camera brand/model support. Use canonical camera names in Plan files.

VTOL Takeof/Landing Pattern work

Shorten meta data keys for smaller file sizes

Replace qFuzzyCompare with better functioning QGC::fuzzyCompare

supportedMissionCommands is vehicle class sensitive

Remove buggy usage of vehicleYawsToNextWaypointInMission

More comprehensive testing of editor facts

Show correct item editor based on current VTOL state

Fix recalc bugs associated with vtol state, speed, vehicle/gimbal yaw

Better handling of vehicle change state transitions

Fact label change

New standalone mission editor unit test

Cleanup/fix command json hierarchy

Support for Vehicle and Firmware classes

Fix item initialization problems leading to crashes and incorrect profile display

Fix global alt mode support

Upload pre-check must be vehicle-class based

Change in vehicle speed requires transect rebuild to recalc terrain max climb/descent rate based setup

No need to call setMissionFlightStatus on newly created items

Don't hold a mission flight status copy

Changes to improve readability

More work on vehicle connect state machine(s)