Add cheat picker window

include/panda_qt/cheats_window.hpp

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <filesystem>
+#include <memory>
+#include <QAction>
+#include <QWidget>
+#include "emulator.hpp"
+
+class QListWidget;
+
+class CheatsWindow final : public QWidget
+{
+    Q_OBJECT
+
+public:
+    CheatsWindow(Emulator* emu, const std::filesystem::path& path, QWidget* parent = nullptr);
+    ~CheatsWindow() = default;
+
+private:
+    void addEntry();
+    void removeClicked();
+
+    QListWidget* cheatList;
+    std::filesystem::path cheatPath;
+    Emulator* emu;
+};