LibGUI: Add autosize to CheckBox

Author: https://github.com/thankyouverycool
Commit: e8c1288e2c
Pull-request: https://github.com/SerenityOS/serenity/pull/6161

Userland/Libraries/LibGUI/CheckBox.h

@@ -38,14 +38,21 @@ public:
 
     virtual void click(unsigned modifiers = 0) override;
 
+    bool is_autosize() const { return m_autosize; }
+    void set_autosize(bool);
+
 private:
     explicit CheckBox(String = {});
 
+    void size_to_fit();
+
     // These don't make sense for a check box, so hide them.
     using AbstractButton::auto_repeat_interval;
     using AbstractButton::set_auto_repeat_interval;
 
     virtual void paint_event(PaintEvent&) override;
+
+    bool m_autosize { false };
 };
 
 }