Sunshine/src_assets/windows/config/apps.json

{
	"env":{
		"PATH":"$(PATH);C:\\Program Files (x86)\\Steam"
	},
	"apps":[
	{
		"name":"Steam BigPicture",

		"output":"steam.txt",
		"detached":["steam steam://open/bigpicture"],
		"image-path":"./assets/steam.png"
	}
	]
}