Add "flyingcomponents" special world property

[FileEX]

Merge after #3572

This PR adds a new special world property called flyingcomponents (default is true). This property determines whether the detached components such as doors, bumpers, etc., should respawn after a vehicle is recreated or streamed in. This PR solves a very frustrating and annoying issue where all missing components fall off again after using setElementModel or setVehicleVariant:

Thanks to this property, various car garages and vehicle spawners will be able to look normal without flying components around