I can’t add this type of feature. Cause the focus of home assistant integration is to provide a “right” way to communicate with some device wrapping it as light, plug, sensor, or anything else. Home assistant allow us to create automation based on these entities (e.g. an automation that use my plug p100). For example, I can create an automation that turn on or off my plug at specific time, or based on a states of others entities (e.g. a sun sensor, which is automatically provided by HA). So here you can find documentation about automation Automating Home Assistant - Home Assistant. And here Sunrise Sunset automation they trying to use sunrise sensor to turn on/off the lights. 
@Leo_Gee @IanD3