Use less pointers in frontend

src/frontend/Debugger.hpp

@@ -4,12 +4,16 @@
 #include <QTreeView>
 #include <QHBoxLayout>
 #include <QVBoxLayout>
+#include <CodeModel.hpp>
 
 class Debugger : public QWidget {
-  QDockWidget *disassembly{}, *cpuState{};
-  QTreeView *codeView{}, *registers{};
-  QHBoxLayout *horLayout{};
-  QVBoxLayout *verLayout{};
+  std::unique_ptr<QDockWidget> disassembly = std::make_unique<QDockWidget>(),
+                               cpuState = std::make_unique<QDockWidget>();
+  std::unique_ptr<QTreeView> codeView = std::make_unique<QTreeView>(disassembly.get()),
+                             registers = std::make_unique<QTreeView>(cpuState.get());
+  std::unique_ptr<QHBoxLayout> horLayout = std::make_unique<QHBoxLayout>();
+  std::unique_ptr<QVBoxLayout> verLayout = std::make_unique<QVBoxLayout>();
+  std::unique_ptr<CodeModel> codeModel = std::make_unique<CodeModel>();
 
 public:
   Debugger();