Demos/CatDog: Let the speech bubble know about the CatDog widget

This will allow us to have better interaction between CatDog's state and
what it's saying.

Userland/Demos/CatDog/SpeechBubble.h

@@ -1,11 +1,14 @@
 /*
  * Copyright (c) 2021, Gunnar Beutner <gunnar@beutner.name>
+ * Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
 #pragma once
 
+#include "CatDog.h"
+#include <AK/NonnullRefPtr.h>
 #include <LibGUI/Widget.h>
 
 class SpeechBubble final : public GUI::Widget {
@@ -16,7 +19,11 @@ public:
     virtual void mousedown_event(GUI::MouseEvent&) override;
 
     Function<void()> on_dismiss;
+    NonnullRefPtr<CatDog> m_cat_dog;
 
 private:
-    SpeechBubble() = default;
+    SpeechBubble(NonnullRefPtr<CatDog> cat_dog)
+        : m_cat_dog(move(cat_dog))
+    {
+    }
 };