Add icons for presets in ViCare ventilation entity (home-assistant#155845)

Author: CFenner

homeassistant/components/vicare/icons.json

@@ -40,6 +40,22 @@
         "default": "mdi:shower-head"
       }
     },
+    "fan": {
+      "ventilation": {
+        "state_attributes": {
+          "preset_mode": {
+            "state": {
+              "permanent": "mdi:fan",
+              "sensor_driven": "mdi:refresh-auto",
+              "sensor_override": "mdi:refresh-auto",
+              "standard": "mdi:snail",
+              "standby": "mdi:power-standby",
+              "ventilation": "mdi:clock-outline"
+            }
+          }
+        }
+      }
+    },
     "number": {
       "heating_curve_shift": {
         "default": "mdi:plus-minus-variant"