Refactor updateInstanceRoot() to BaseInstance

Signed-off-by: Yihe Li <winmikedows@hotmail.com>

launcher/BaseInstance.h

@@ -117,6 +117,9 @@ class BaseInstance : public QObject, public std::enable_shared_from_this<BaseIns
     /// Path to the instance's root directory.
     QString instanceRoot() const;
 
+    /// Update instanceRoot to make it sync with name/id; return true if a refresh is needed
+    bool updateInstanceRoot(QWidget* parent);
+
     /// Path to the instance's game root directory.
     virtual QString gameRoot() const { return instanceRoot(); }