Landing Pattern: Loiter to alt optional support

Fix disable of vehicle fw/type changes

Add note to help with confusion

QGCFileDialog remove separate mobile fileExtension properties

Clean up references to MainRootWindow globals

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

Fix typo

Convert to app units as needed

Switch to Controls 2 version of QGCButton

Split into Views and Tools

Telemetry Values bar at center bottom

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

VTOL Takeof/Landing Pattern work

supportedMissionCommands is vehicle class sensitive

Better handling of vehicle change state transitions

VIsual tweaks

Support for Vehicle and Firmware classes

Gradient units are degrees

Remove unused Shapes module causing AppImage to fail

Fix blank PlanView due to bad connection

Fix missing missionItem property set

Use new Transect common controls

Common control for terrain follow

Common control for Pattern tab bar

Fix  incorrect supportsTerrain reference

Initial support for global plan-wide altitude mode setting

Rework handling of fw/vehicle type with respect to conflicts with actual vehicle types.