Add humdity icons

lovelace-views/overview.yaml

@@ -10,10 +10,13 @@ cards:
     entities:
       - entity: sensor.bathroom_hygrometer_humidity
         name: Badezimmer
+        icon: mdi:water-percent
       - entity: sensor.humidity_4
         name: Wohnzimmer
+        icon: mdi:water-percent
       - entity: sensor.attic_humidity
         name: Dachboden
+        icon: mdi:water-percent
   - type: entities
     entities:
       - entity: sensor.myip