Add Entity categories for Home Assistant (#2636)

esphome/components/shutdown/switch.py

@@ -1,7 +1,14 @@
 import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome.components import switch
-from esphome.const import CONF_ID, CONF_INVERTED, CONF_ICON, ICON_POWER
+from esphome.const import (
+    CONF_ENTITY_CATEGORY,
+    CONF_ID,
+    CONF_INVERTED,
+    CONF_ICON,
+    ENTITY_CATEGORY_CONFIG,
+    ICON_POWER,
+)
 
 shutdown_ns = cg.esphome_ns.namespace("shutdown")
 ShutdownSwitch = shutdown_ns.class_("ShutdownSwitch", switch.Switch, cg.Component)
@@ -13,6 +20,9 @@ CONFIG_SCHEMA = switch.SWITCH_SCHEMA.extend(
             "Shutdown switches do not support inverted mode!"
         ),
         cv.Optional(CONF_ICON, default=ICON_POWER): switch.icon,
+        cv.Optional(
+            CONF_ENTITY_CATEGORY, default=ENTITY_CATEGORY_CONFIG
+        ): cv.entity_category,
     }
 ).extend(cv.COMPONENT_SCHEMA)