Change unsaved file to provide constructor overloads
for std::make_unique, std::make_shared and
QSharedPointer::create
Example:
// Provide Foo constructor signatures at <Cursor>
std::make_unique<Foo>(<Cursor>
Task-number: QTCREATORBUG-18615
Change-Id: I87dd17085adf99ee498db969a3cdda5ebd973476
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
