Define an operator << that accepts a raw pointer for the list of
QuickFixOperation::Ptr instead.

Fixes MSVC 17 warnings

src/corelib/tools/qlist.h(423): warning C4661: 'QVector<T> QList<T>::toVector(void) const': no suitable definition provided for explicit template instantiation request        ]
src/corelib/tools/qlist.h(389): note: see declaration of 'QList<TextEditor::QuickFixOperation::Ptr>::toVector'
src/corelib/tools/qlist.h(423): warning C4661: 'QSet<T> QList<T>::toSet(void) const': no suitable definition provided for explicit template instantiation request
src/corelib/tools/qlist.h(390): note: see declaration of 'QList<TextEditor::QuickFixOperation::Ptr>::toSet'
src/corelib/tools/qlist.h(423): warning C4661: 'QList<TextEditor::QuickFixOperation::Ptr> QList<TextEditor::QuickFixOperation::Ptr>::fromVector(const QVector<T> &)': no suitable definition provided for explicit template instantiation request
...

Task-number: QTBUG-57086
Change-Id: I879511656c39eb7a3eae54ea7daca3eca8ebe8d7
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: David Schulz <david.schulz@qt.io>