QmlProjectManager: Add .qmlproject file generator

Task-number: QDS-6993
Change-Id: I033b0efeea87e8eab3238d3ce8d5f25752822e36
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/qmlprojectmanager/qmlprojectplugin.h

@@ -66,6 +66,7 @@ private:
     void initializeQmlLandingPage();
     void displayQmlLandingPage();
     void hideQmlLandingPage();
+    void updateQmlLandingPageProjectInfo(const Utils::FilePath &projectFile);
 
     class QmlProjectPluginPrivate *d = nullptr;
 };