test(unittest): add unit tests for driveritem, PageDriverBackupInfo and PageDriverRestoreInfo - #772

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Include file: "PageDriverRestoreInfo.h" not found.

Include file: "stub.h" not found.

Include file: <DStackedWidget> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: <gtest/gtest.h> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: "driveritem.h" not found.

Include file: "PageDriverTableView.h" not found.

Include file: "PageDriverBackupInfo.h" not found.

Include file: "stub.h" not found.

Include file: <QSignalSpy> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: <gtest/gtest.h> not found. Please note: Cppcheck does not need standard library headers to get proper results.