Improve usage of std::move and const references parameters

Accomplished using `run-clang-tidy` with `performance-move-const-arg,performance-unnecessary-value-param,modernize-pass-by-value`.

Changed arguments to const references, removed them where inappropriate (e.g. sink parameters). Same with std::move.

Manually reviewed each change to make sure that it makes sense, and do something more appropriate if possible.

Source/Core/DolphinQt/Config/VerifyWidget.h

@@ -32,13 +32,13 @@ public:
 private:
   void OnEmulationStateChanged(Core::State state);
   void CreateWidgets();
-  std::pair<QCheckBox*, QLineEdit*> AddHashLine(QFormLayout* layout, QString text);
+  std::pair<QCheckBox*, QLineEdit*> AddHashLine(QFormLayout* layout, const QString& text);
   void ConnectWidgets();
 
   bool CanVerifyRedump() const;
   void UpdateRedumpEnabled();
   void Verify();
-  void SetProblemCellText(int row, int column, QString text);
+  void SetProblemCellText(int row, int column, const QString& text);
 
   std::shared_ptr<DiscIO::Volume> m_volume;
   QTableWidget* m_problems;