Auto creation of fields

It would be useful to have a feature that automatically creates field definitions.

E.g. if you write:
this->mLabel = new QLabel();

and then call such an feature "auto create private field" for mLabel, it should:

1. infer from the assignment that the type of mLabel must be QLabel*
2. determine which class this belong to
3. automatically create a private field "QLabel* mLabel" in the header
4. create a forward class definition "class QLabel;" before the this-class in the header
5. include the <QLabel>-header in the cpp

The last two steps should of course only be performed, if the definitions aren't already there, and if the type is a pointer. For non pointer types, Qt Creator has to include the required header in the corresponding header. It is also important that it finds the correct header (for non qt-types it could look at the includes of other files in the project), and that it chooses between struct/class forward definitions.

This could also be done for different classes than the this-class above. E.g:
MyStrangeClass foo;
foo->bar = new QLabel();

could auto create a field QLabel* bar in the class MyStrangeClass.

(this is like 1532, but for fields instead of methods)