Better handling of vehicle change state transitions

Initial support for global plan-wide altitude mode setting

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

Mavlink terrain protocol support

Fix save state checks. Show overlay on New.

New Create Plan support

Fix initial load for Plan view

Fix AutoLoad not sending GeoFence or Rally Points to vehicle

Expose root plan keys

Split save mission to Json file in two so you have the option to saving it to a file or to a QByteArray Json blob.
Virtualize all camera functions to allow deeper access.

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

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

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

This time to handle correctly updating plan/fly view when plan changes

Update the user model to a single controller instead of multiple