Public getters for item and model in Dbo Forms
FormView class introduced in #8622 contain an
model_ member respectively.
Both members cannot be accessed from outside the class (nor from inherited classes).
Public getters should be added for both members so that the user is allowed to do something with the
item_ after they've saved the view.
Adding these getters will for example allow the user to react to the
saved() signal from a specialized
FormView class by saying "Item #ID has been successfully saved".