Add cover strings.

custom_components/tuya_local/translations/en.json

@@ -25,6 +25,7 @@
 		    "name": "Name",
 		    "binary_sensor": "Include a binary sensor entity",
 		    "climate": "Include a climate entity",
+		    "cover": "Include a cover entity",
 		    "fan": "Include a fan entity",
 		    "humidifier": "Include a humidifier entity",
 		    "light": "Include a light entity",
@@ -111,6 +112,7 @@
 		"local_key": "Local key",
 		"binary_sensor": "Include a binary sensor entity",
 		"climate": "Include a climate entity",
+		"cover": "Include a cover entity",
 		"fan": "Include a fan entity",
 		"humidifier": "Include a humidifier entity",
 		"light": "Include a light entity",