Add an entry for "wingetcreate" to the "Tools" menu.
The menu item could be, Run wingetcreate. Clicking this will check if wingetcreate can be run, and if it can't be run, there should be a way to offer to install it. Not sure if something like cmd /k wingetcreate with the necessary --command thing is necessary. Maybe just trying to run it without the --command would be useful to check if it's installed, then run it in CMD with the --command. If it's not installed, there will be a message box saying it's not and asking people if they want to install it, along with what command it'll use "(winget install wingetcreate)".
When checking if it can be run, I should make sure to hide the window so it doesn't have an empty window appear when the user doesn't expect it, because it may be concerning.
It's a command-line program, so I'll have to have a window open that provides a dropdown and a textbox for extra commands to be passed to wingetcreate, along with an option for the user to use a command that they specify that may be supported by wingetcreate but we don't provide.