citra-qt: Move graphics debugging code into its own folder

Keeps all graphics debugging stuff from cluttering up the root debugger
folder

src/citra_qt/debugger/graphics/graphics_breakpoint_observer.h

@@ -0,0 +1,33 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QDockWidget>
+#include "video_core/debug_utils/debug_utils.h"
+
+/**
+ * Utility class which forwards calls to OnPicaBreakPointHit and OnPicaResume to public slots.
+ * This is because the Pica breakpoint callbacks are called from a non-GUI thread, while
+ * the widget usually wants to perform reactions in the GUI thread.
+ */
+class BreakPointObserverDock : public QDockWidget,
+                               protected Pica::DebugContext::BreakPointObserver {
+    Q_OBJECT
+
+public:
+    BreakPointObserverDock(std::shared_ptr<Pica::DebugContext> debug_context, const QString& title,
+                           QWidget* parent = nullptr);
+
+    void OnPicaBreakPointHit(Pica::DebugContext::Event event, void* data) override;
+    void OnPicaResume() override;
+
+private slots:
+    virtual void OnBreakPointHit(Pica::DebugContext::Event event, void* data) = 0;
+    virtual void OnResumed() = 0;
+
+signals:
+    void Resumed();
+    void BreakPointHit(Pica::DebugContext::Event event, void* data);
+};