New VehicleLinkManager implementation

Clean up references to MainRootWindow globals

Split into Views and Tools

Telemetry Values bar at center bottom

More flight mode, vtol mode, armed into main status

Visual tweaks

Ready To Fly support based on MAV_SYS_STATUS_PREARM_CHECK

Tweaks to toolbar visibility

VIsual tweaks

Added configurable value grid to toolbar

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

Programmatic switch to SetupView leaves two buttons selected

Prevent view switching apis support a stack

View switch prevention support

Restructure toolbar to make it Flickable

Fix spacing

Restore QGC to its normal UI layout (buttons on toolbar)

TODO: Improve the experience

Prevent clicks going through top level items

For showTouchAreas and showAdvancedUI