A promise that resolves to one of the following values:
-2 if an error occurs.0 if the operation is closed.1 if the operation is successful.The function displays a menu with options to configure the server shop, player shop, and sign shop settings. It also checks for permissions if ultra security mode is enabled.
The menu options are:
If an error occurs during the execution, it logs the error and returns -2.
Main function to handle the shop system settings interface.