I don’t know why you’d have a smart plug controlling power to a refrigerator, but that’s your business. 
I’m also not aware of a way to do what you’re suggesting, though I think there’s some value to making control choices for devices more intentional within the app, and I’ve commented elsewhere that I like the way myQ gives users a choice for this within their app’s UI: Users can choose whether a simple single-tap or a press-and-hold is required to open or close a connected garage door. I like how the press-and-hold is a way for the app to be sure that I intend for it to do what I’m indicating and that it’s not merely an accident or errant tap.