Cherry pick stable fixes

FactMetaData: Add custom validator support

Add custom validator support

Cherry pick stable fixes

Introduce gimbal yaw visiblity setting

Added configurable value grid to toolbar

Added configurable value grid to toolbar

Fix VTOL hover determination

Fix VTOL hover determination

ToolStrip re-architecture for encapsulation and customization

Remove old action list code

ToolStrip rearchitecture for encapsulation and customization

Re-architect toolbar for better customization, features, real estate

Fix logic of when adding Landing item is allowed

Re-architect toolbar for better customization capabilities. Also use less real estate.

Fix logic of when adding Landing item is allowed

Fly View rearchitecture

Vertical units - fix omission

Rework Fly View into separate layers which can be customized at each layer

Rework Fly View into separate layers which can be customized at each layer.

More FlyView encasulation. Make QGCPipOverlay completely self contained

Sub: Add fact for roll/pitch toggle, remove spaces from fact names

More FlyView encasulation. Make QGCPipOverlay completely self contained

This will allow sub users to see if the ROV is in the Roll/pitch toggle
mode using the APMSubInfo section in the info widget

More work on encapsulation in Fly View

More work on encapsulation in Fly View

Fly View: Move business logic inside controls

New crowdin translations folder