Sorry, VisualGDB hasn’t been explicitly tested with ESP-MDF. If the MDF framework works together with ESP-IDF, you should be able to import an existing MDF-enabled project into VisualGDB and then use the regular VisualGDB GUI for building and debugging it.
The ESP-MDF is very new and it’s hard so say how popular it is going to be, and hence when will we add full out-of-the-box support.
We could add the full MDF integration early as a part of our paid consulting services – do the necessary research and document the exact steps needed to get certain functionality working with ESP-MDF and VisualGDB. If you are interested, please contact our sales with more details and we will get you a quote.