Preliminary settings work

src/frontend/SettingsWindow.hpp

@@ -0,0 +1,15 @@
+#pragma once
+#include <QWidget>
+#include <QTabWidget>
+#include <QPushButton>
+#include <CPUSettings.hpp>
+
+class SettingsWindow : public QWidget {
+  QPushButton* cancel = new QPushButton("Cancel");
+  QPushButton* apply = new QPushButton("Apply");
+  Q_OBJECT
+public:
+  SettingsWindow();
+  nlohmann::json settings;
+  CPUSettings* cpuSettings;
+};