Qt: Add new cheat manager

src/duckstation-qt/cheatcodeeditordialog.h

@@ -0,0 +1,25 @@
+#pragma once
+#include "core/cheats.h"
+#include "ui_cheatcodeeditordialog.h"
+
+class CheatCodeEditorDialog : public QDialog
+{
+  Q_OBJECT
+
+public:
+  CheatCodeEditorDialog(CheatList* list, CheatCode* code, QWidget* parent);
+  ~CheatCodeEditorDialog();
+
+private Q_SLOTS:
+  void saveClicked();
+  void cancelClicked();
+
+private:
+  void setupAdditionalUi(CheatList* list);
+  void fillUi();
+  void connectUi();
+
+  CheatCode* m_code;
+
+  Ui::CheatCodeEditorDialog m_ui;
+};