DolphinQt: Create toggle for enabling/disabling time tracking

Introduce a new "Enable Time Tracking" checkbox in the InterfacePane UI. The checkbox is dynamically enabled or disabled based on the emulation state, preventing changes while emulation is active.

Source/Core/DolphinQt/Settings/InterfacePane.h

@@ -13,6 +13,11 @@ class QVBoxLayout;
 class ToolTipCheckBox;
 class ToolTipComboBox;
 
+namespace Core
+{
+enum class State;
+}
+
 class InterfacePane final : public QWidget
 {
   Q_OBJECT
@@ -30,6 +35,8 @@ private:
   void OnUserStyleChanged();
   void OnLanguageChanged();
 
+  void OnEmulationStateChanged(Core::State state);
+
   QVBoxLayout* m_main_layout;
   ConfigStringChoice* m_combobox_language;
 
@@ -42,6 +49,7 @@ private:
   ConfigBool* m_checkbox_focused_hotkeys;
   ConfigBool* m_checkbox_use_covers;
   ConfigBool* m_checkbox_disable_screensaver;
+  ConfigBool* m_checkbox_time_tracking;
 
   ConfigBool* m_checkbox_confirm_on_stop;
   ConfigBool* m_checkbox_use_panic_handlers;