settings, arm_dynarmic, yuzu qt: Move CPU debugging option

Decouples the CPU debugging mode from the enumeration to its own
boolean. After this, it moves the CPU Debugging tab over to a sub tab
underneath the Debug tab in the configuration UI.

src/yuzu/configuration/configure_cpu.h

@@ -29,7 +29,6 @@ private:
     void changeEvent(QEvent* event) override;
     void RetranslateUI();
 
-    void AccuracyUpdated(int index);
     void UpdateGroup(int index);
 
     void SetConfiguration();