model.Component: internalSetData() => add support for smart sub tree updates

Inside Neo.examples.model.nestedData.MainContainer we have the following use case:

model: {
    data: {
        user: {
            details: {
                firstname: 'Nils',
                lastname : 'Dehl'
            }
        }
    }
}

So far, updating vm data props only worked with passing the path to a leaf:

updateButton2Text(value) {
    this.getModel().setData({
        'user.details.lastname': value
    });
}

It would improve the developer experience a lot, in case we can also pass objects:

updateButton2Text(value) {
    this.getModel().setData({
        'user.details': {
            lastname: value
        }
    });
}

In this case, we do want to update the lastname leaf, without deleting or changing firstname.

the new logic will enable us to do so and parse value based objects recursivly. if you pass nested objects which do not exist as data props yet, they will get added as new bindable data props:

updateButton2Text(value) {
    this.getModel().setData({
        'user.details': {
            foo: {
                bar: {
                    baz: 'hi deniz!'
                }
            }
        }
    });
}

however: this approach also means that existing objects will get modified. if you want to store an existing data record, it will get affected.

@ExtAnimal @deniztoprak @ThorstenRaab