Added frontend invokation to open local folder

Signed-off-by: Dominique Fuchs <32204802+DominiqueFuchs@users.noreply.github.com>

src/gui/tray/UserModel.h

@@ -62,6 +62,7 @@ public:
     };
 
 signals:
+    Q_INVOKABLE void openLocalFolder();
     Q_INVOKABLE void login();
     Q_INVOKABLE void logout();
     Q_INVOKABLE void addAccount();

src/gui/tray/window.qml

@@ -237,6 +237,7 @@ Window {
                         hoverEnabled: true
                         onClicked:
                         {
+                            systrayBackend.openLocalFolder()
                         }
                     }