While there is a motion sensor temperature rule to notify you based on temperature parameters, I'd love this to be extended to control a smart plug. For example:
If outside shed temperature drops below 35%, turn on smart plug which could turn on a space heater, etc...
You can do this now. Under the Climate rules there a a rule called Control LIghts and switches based on temperature.
You can use the "Control Lights and Switches based on Temperature" rule to do this.