Add "Show in File System View" to more menus

And add a shortcut for editor manager for that, similar to "Show in
Finder/Explorer" and "Open Terminal Here".

Change-Id: Iddc287106e194c856501bf38e53b3c738a2aed1a
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/coreplugin/fileutils.h

@@ -43,6 +43,7 @@ struct CORE_EXPORT FileUtils
 {
     // Helpers for common directory browser options.
     static void showInGraphicalShell(QWidget *parent, const Utils::FilePath &path);
+    static void showInFileSystemView(const Utils::FilePath &path);
     static void openTerminal(const Utils::FilePath &path);
     static void openTerminal(const Utils::FilePath &path, const Utils::Environment &env);
     static QString msgFindInDirectory();