Qt: Initial CPU debugger widget implementation

Co-Authored-By: liuk707 <62625900+liuk7071@users.noreply.github.com>

include/panda_qt/cpu_debugger.hpp

@@ -0,0 +1,38 @@
+#pragma once
+#include <QListWidget>
+#include <QPlainTextEdit>
+#include <QScrollBar>
+#include <QWidget>
+
+#include "emulator.hpp"
+#include "panda_qt/disabled_widget_overlay.hpp"
+
+class CPUDebugger : public QWidget {
+	Q_OBJECT
+	Emulator* emu;
+
+	QListWidget* disasmListWidget;
+	QScrollBar* verticalScrollBar;
+	QPlainTextEdit* registerTextEdit;
+
+	DisabledWidgetOverlay* disabledOverlay;
+
+	bool enabled = false;
+
+  public:
+	CPUDebugger(Emulator* emulator, QWidget* parent = nullptr);
+	void enable();
+	void disable();
+
+  private:
+	// Update the state of the disassembler. Qt events should always call update, not updateDisasm/updateRegister
+	// As update properly handles thread safety
+	void update();
+	void updateDisasm();
+	void updateRegisters();
+
+	bool eventFilter(QObject* obj, QEvent* event) override;
+	void showEvent(QShowEvent* event) override;
+	void resizeEvent(QResizeEvent* event) override;
+	void keyPressEvent(QKeyEvent* event);
+};